The BEST Episodes of High School DxD
Every episode ever - ranked by fan votes!
Last Updated: Aug 7, 2019
The story follows Hyoudou Issei, a dim-witted, lecherous second-year high school student who is killed by a girl on his first date ever. Issei is reincarnated as a devil, and from that day forward, he serves as an underling of Rias Gremori, a high-level devil who is also the prettiest girl on Issei's campus.
#1 - Two Heavenly Dragon, Collide!
Season 2 - Episode 12
Issei wakes up to find himself passed out in his own bed after the rating game. Soon after, Grayfia (Sirzech's wife and Queen) informs Issei the results of the Rating Game. She gives Issei a magic circle that will allow him to attend the Gremory-Phenex engagement party with Sirzech's message that if Issei wants to do something, then to go in and rescue Rias by force. Upon arriving, Issei begins to crash the party, but is interrupted when Sirzechs comes in and offers to host a one-on-one battle between Riser and Issei to liven things up since he found the Rating Game unsatisfying. Issei shows that he didn't plan on beating Riser by his feelings alone. After the match Issei finds out what was on the back of the transport circle Grayfia gave him. Sirzech comments to Grayfia his feelings and plans about Rias' forced engagement. Rias, overwhelmed by Issei's feelings and determination, acts on impulse. As a result of the duel between Dragon and Phoenix, some changes are going to occur at Issei's house while Asia and Akeno try to help him deal with the consequences of a choice he made.
#2 - Dragon of Dragon
Season 3 - Episode 9
After Asia disappears, Shalba Beelzebub, a devil, tells the Occult Research Club that Asia has been killed by entering the Dimensional Gap. Xenovia attempts to avenge Asia, but Shalba easily defeats her and kills Diodora when he mentions the New and Old Factions. Enraged by Asia's assumed demise, Issei activates his Juggernaut Drive. Meanwhile, Creuserey Asmodeus, another devil, attempts to battle Azazel and his Down Fall Dragon Spear but Sir Zechs intervenes and kills Creusery. Using his Juggernaut Drive powers, Issei overpowers and "kills" Shalba with the Longinus Smasher. Vali's team arrives and brings Asia back from the Dimensional Gap, much to Xenovia's happiness. Vali and Rias decide to work together to calm Issei's rage, Vali uses his own Juggernaut Drive to match Issei and drain away his aura with Rias reaches out to him to calm him down. The Occult Research Club, Vali's team and Ophis, who says that she has removed a curse from Issei, witnesses the arrival of Great Red before Issei collapses from exhaustion.
#3 - Lion Heart of the School Festival
Season 4 - Episode 12
Having pulled off a Cardinal Crimson promotion due to the color of his new armor. Remembering his promise to Sirzechs to fight for his and the children's dreams, as well as the dreams of the Gremory family, Issei finally confesses his love for Rias in front of everyone, including her. After that, Sairaorg and the new queen Issei engage in a fistfight duel, although Ddraig reminds him that he hardly has had any time to adjust to his new form, Issei fights through it and manages to overpower Sairaorg. Despite Sairaorg's impressive willpower, Issei uses his Crimson Blaster to severely damage Sairaorg. Although he manages to get up again thanks to his mother's vision, where she explain his vision: A world where skill and hard work is valued instead of what they are. Sairaorg and Issei once again trade blows and although he has newfound respect for Sairaorg, Issei continues to keep fighting to defeat a man like him. Physically drained, Issei loses his armor, but Regulus explains that, though Sairaorg has lost consciousness, he enjoyed the chance to fight Issei even if it meant putting his dream on the line to do it. Realizing what Sairaorg did, Issei embraces him before Sairaorg is eliminated. After winning the rating game, Issei and Sairaorg wake up in a hospital, where they claim it was the best battle they've ever had before Sirzechs arrives to tell them that the higher ups are so satisfied with the results, that the general populace expects great things from them both and tells Issei about a plan to promote Issei to a mid-ranking Devil, along with Kiba and Akeno. Sairaorg then encourages Issei to confess his love for to Rias in private from the bottom of his heart so that she'll know that he's not lying about his feelings, promising that if things go south, he'll be there for him. In the aftermath, the festival takes place and Azazel informs him that although Sairaorg's backers have pulled their support from him, his popularity and power have remained largely the same, he also tells Issei to not think about it and stick to this own problems like his new duties as a queen. That night, Issei and Rias end up alone where Issei finally calls Rias by her name and professes that he's been in love with her since they met, crying tears of joy, Rias also tells him that she loves him more than anyone else. They almost kiss each other only to get interrupted by their friends. Although they're happy for them, it won't stop the girls from trying to seduce Issei, even going as far as to convince Rias to let him have him, knowing that he'll come back to her. After they leave, Issei and Rias share their first kiss as a couple. In the Underworld, Azazel and Sairaorg are talking about how Issei confessed to Rias and how happy they are together. Sairaorg's mother regains consciousness and tells him about how proud she is of him and that they finally get to go home together. Azazel is convinced that Issei had a hand in it before leaving.
#4 - I Came to Carry Out My Promise!
Season 1 - Episode 12
Issei wakes up to find himself passed out in his own bed after the rating game. Soon after, Grayfiel (Sirzech's Queen) gives Issei a magic circle that will allow him to attend the Gremory-Phoenix engagement party, knowing that he's just going to go there to crash it. Upon arriving, Issei begins to crash the party, when Sirzech comes in and offers to host a 1 on 1 battle between Raiser and Issei. It is shown that Issei traded his left arm to the dragon that resides within him, for extreme power that will only last 10 seconds. After ten seconds are up, Issei continues his attack on the slightly weakened Raiser by using Holy objects that he acquired from Asia. After winning the battle, it is revealed that Sirzech would have, if necessary, allowed a griffin to aid Issei in his battle against Raiser. The episode ends with Rias kissing Issei while flying on a griffin, and then showing cuts to a moment where Rias tells Issei's parents that she want's to move in with him.
#5 - Go, Occult Research Club!
Season 2 - Episode 6
Issei transfers his boosted powers to Rias who then proceeds to attack Kokabiel but to no avail. Akeno then attacks Kokabiel but to no avail as well. Realizing Akeno is the daughter of the Fallen Angel Cadre, Baraqiel, Kokabiel makes fun of Rias, claiming that she has a habit of taking in weird people like her brother. Angered by Kokabiel's insults, Issei decides to fight Kokabiel as Kiba, Xenovia and Koneko attacks Kokabiel to buy time for Issei to boost his powers. Despite the combined effort of all three, they couldn't inflict much damage towards Kokabiel. Kokabiel then proceeds to reveal that in the Great War in the past, both the Four Great Satans and God died, much to the surprise of everyone persent, especially Asia and Xenovia who were shocked at the revelation. Despite so, Issei strongly states his dream of becoming a Harem King along with Rias' incentive, Issei manages to attack Kokabiel while reigniting his friends' fighting spirit. Before the fight can continue though, the barrier surrounding the school field was destroyed by a new figure appears in the fight. Naming himself as the White Dragon Emperor, Albion, he proceeds to defeat Kokabiel, negating the self destruct spell on the school. He then takes Kokabiel and Freed away from the field. Glad that the battle is over, Sona and her team proceeds to fix the school while Kiba manages to truly get over his past with the help of his friends as he vows one more time to serve Rias along with her other servants. The next day, Issei and Asia are surprised to see Xenovia appearing in the Occult Reseach Club, wearing a Kuoh Academy uniform. Xenovia then reveals that she has reincarnated into a Devil as Rias' Knight after learning God died and apologizes to Asia for her rude remarks to her in the past. Issei is later seen playing a video game with his client, who later reveals himself as Fallen Angel Leader Azazel.
#6 - The Leaders’ Summit Begins!
Season 2 - Episode 11
The meeting between the leaders of the Three Factions continues with Azazel asking both Issei and Vali about their opinion for the peace treaty. Issei then asked Michael on why Asia was exiled as he explains the situation of the Heaven as both Asia and Xenovia reveals that they are happy with their current lifestyle. Azazel then comments about his subordinate who killed Asia as Issei gets angry at Azazel until the time is suddenly freezed. Realizing that Gasper was kidnapped, the meeting was interfered as many Magicians appears and start to attack the meeting. As Rias decides to go rescue Gasper with Issei volunteering to go along. Vali then starts to battle the Magicians outside as he annihilates them with ease. Rias and Issei then transfer to the old school building through castling using Rias' unused Rook piece. Before leaving, Azazel gave Issei two bracelet to control his and Gasper's Sacred Gear. Meanwhile, a new woman, Katarea Leviathan, appears after Issei and Rias left and attack the leaders. Azazel then starts a battle with Katerea after insulting her. Kiba, Xenovia and Irina also volunteers to help in battling the Magicians while Grayfia is analyzing the magic circle used by the Magicians. Issei and Rias then arrives to the room where Gasper and Koneko was held captive as Issei lets Gasper drink his blood allowing Gasper to properly control his powers as Issei uses Dress Break on them. Issei then outs the additional bracelet as the four heads out.
#7 - Man Against Man
Season 4 - Episode 11
On the battlefield, Sairaorg takes off his constraints that causes his fighting aura to significantly increase. Taking down Rossweisse with a single punch, although it's later revealed to be a perfectly planned ruse. The Rossweisse that Sairaorg knocked out of the arena was a mimic created by an Excalibur sword which she borrowed from Xenovia and even falling into the water was part of her plan. However, the real Rossweisse is eliminated when Sairaorg fires an attack towards them. Although they sever his right arm, they are defeated when Sairaorg overpowers and eliminates them, while Sairaorg is forced to use the Phoenix Tears to repair his arm. After the total adds to nine, Issei is sent out to fight Kuisha. Issei, angered at the demise of six of his friends and wanting to avenge Akeno, uses his Balance Breaker to eliminate Kuisha instantaneously, which shocks both Asia and Rias, although Azazel discovers that Sairaorg eliminated Kuisha himself, knowing that Issei's attack would've killed her anyway. Sairaorg proposes that they drop the rules and skip to the grand finale so he and his remaining pawn can fight the remaining members of Gremory house, Rias agrees to the conditions and Issei vows to take Sairaorg down as he wouldn't be able to face his friends otherwise. Rias and Issei fight against Sairaorg and his pawn Regulus. Issei and Sairaorg punch eachother, but Issei boosts his ability to inflict more damage onto Sairaorg, while Rias watches as Regulus turns into a golden Nemean lion, one of the thirteen legendary longinuses, whose master was murdered and found by Sairaorg after he destroyed his master's killers. Issei and Sairaorg trade blow for blow, where Issei discovers that his right punches are slower and less damaging then his left one thanks to Kiba and Xenovia severing it, giving him an advantage. Unfortunately for Rias, she has become too weak from blood loss caused by Regulus to have an advantage over him, so Issei pours the Phoenix Tears onto her to ensure she survives. At Regulus and Issei's suggestion, Sairaorg uses Regulus' power to transform into the Balance Breaker, Regulus Rey Leather Rex. Sairaorg and Issei fight once again, with Sairaorg getting the upper hand. Although he is reluctant, Issei knows that he has to use the Juggernaut Drive if he wants to have any chance or defeating Sairaorg. While arguing, one of Albion's former hosts interrupts them and reminds Issei of when he inserted Albion's gem into his Boosted Gear and aids him by combining both Red and White Dragon abilities together. In addition to this, with the assistance of his friends, fans, his love for Rias and his dreams, Issei uses his Balance Breaker to try something completely new: Permanently promote himself to a queen.
#8 - Summer! Bathing Suits! I'm in Trouble!
Season 2 - Episode 7
Continuing with Azazel revealing his identity to Issei. Back at the Occult Research Club, Issei reveals this fact to his master and allies, much to Rias' displeasure. The next day, the Occult Research Club is placed in charge of cleaning the pool, while Issei's Dragon arm acts up again as Akeno is in charge of sucking the Dragon power. After cleaning the pool, the Occult Research Club fills up the pool and starts swimming. Rias then attempts to seduce Issei by ordering him to apply sunscreens on her back as Akeno also attempts to seduce Issei, resulting in a battle between the two. Running away from the pool, Issei meets Xenovia who attempts to have a child with him. Before they could proceed with it, Rias and the other girls arrive at the spot. Back at the Occult Research Club, Sirzechs and Grayfia arrives at the clubroom to greet Rias and her peerages, revealing that he was there for Rias' class observation day and to investigate the place that will be used as the place for the meeting for the three factions. Sirzechs and Grayfia then heads to the Hyoudou Residence to greet Issei's parents as Sirzechs' spend a night on Issei's room. The next day, Rias leaves the Hyoudou Residence earlier to guide Sirzechs and Grayfia, while Asia goes to Xenovia's apartment leaving Issei to walk alone to the school as he meets a young man who names himself as Vali, the White Dragon Emperor.
#9 - Another Disquieting Premonition!
Season 2 - Episode 1
Issei wakes up on a certain morning and finds Rias sleeping naked beside him until Asia arrives to wake Issei up which ends up in a hectic morning for Issei after Rias deliberately provoked Asia. Later, while having his usual school days with his friends, Issei's Dragon arm awoke forcing Issei to meet Akeno to have the Dragon Power removed. After school, Rias and the others arrived at Issei's house to have their usual club activity until Issei's mom arrived and showed Issei's childhood photos. Among one of those, Kiba notices that there was a Holy Sword among the photos Issei took with his friend while playing at that friend's house. Later, while on the way home after Issei completed a contract with his new client, Issei and his friends receives an order to hunt down a Stray Devil at an abandoned factory. The team manages to defeat the Stray Devil albeit with some difficulties due to Kiba not paying attention in the fight. When questioned by Rias, Kiba gestures it off as nothing and leaves soon after, with Issei following in pursuit worried about him as Kiba reveals to Issei his purpose of living, to seek revenge against the Holy Sword Excalibur. Later at his house, Issei questions Rias about the Holy Sword and Kiba's past where he was part of a project called "The Holy Sword Project" where he was a survivor of it. Kiba, on his way back, witnesses a priest being killed by Freed Sellzen and was further enraged by the Excalibur that Freed was wielding, leading to a battle between the two. Meanwhile, two unknown individuals arrived in Issei's town.
#10 - Various Three-way Deadlocks!
Season 2 - Episode 10
Continuing from previous episode, Issei meets the leader of the Angels, the Archangel Michael. He receives the Holy Sword, Ascalon, from Michael and procceds assimilate it into his Boosted Gear. Michael then leaves shortly after that. After Michael leaves, Issei and Akeno have a conversation regarding Akeno's identity as Issei manages to deepen his bonds his Akeno, who gives him a lap pillow until a jealous Rias appears and force Issei to leave with her. Issei then leaves Rias and head back to the school to help Gasper in his training who shows great improvement in controlling his powers. On the day of the conference, Rias and her servants goes to the meeting room, leaving Koneko and Gasper behind. At the meeting, they meet Azazel and Vali who are representing the Fallen Angels, Michael who represents the Angels and Sirzechs and Serafall who are representing the Devils as the Three Factions starts the meeting. Meanwhile, a group of mysterious people approaches Gasper and Koneko who are standing by at the Occult Research Clubroom.
#11 - Any Time, For All Time!
Season 3 - Episode 12
As the battle continues, Issei eventually talks Rias out of her mind control, forcing the cursed fragment out of Rias. The cursed Juggernaut Drive fragment takes on Issei appearance before transforming into the Juggernaut Drive. Back in the human world, the protagonists are sent back to the Kuoh Academy with Irina and Rossweisse tending to them. After a brief discussion with Azazel on the Juggernaut Drive's fragment being used by Loki, the girls starts to pray for Issei and Rias' safe return. Inside the Dimensional Gap, Loki's curse, transformed into the Juggernaut Drive, continues its assault on Issei and Rias. Issei, determined to protect Rias, once again dons the Scale Mail armor and through the modification of the Evil Pieces previously done by Ajuka, allows Issei to form two cannons on his Scale Mail as he finally destroys the curse, obliterating the fragment. The victory, however, is short lived as the field created by Arthur gets destroyed due to the impact of the battle as both Issei and Rias gets swallowed by the Dimensional Gap ending at some unknown dimension with an unknown creature.
#12 - High Praises During the Decisive Battle!
Season 1 - Episode 11
The Rating Game continue where Rias's Queen is defeat. Issei's Boosted Gear with the help of Kiba's power take out the rest of Raiser's pieces. Rias forfeited to save Issei from Raiser.
#13 - Decisive Battle at Kuoh Academy!
Season 2 - Episode 5
Sona and her team form a barrier surrounding the school, while Rias and her team prepares for their battle against Kokabiel, Freed and Valper. The battle begins with Kokabiel summoning several Cerberus demons to battle the Gremory Team, which the Gremory Team successfully defeats with the help of Xenovia. During that time, Valper successfully combines the four Excalibur while triggering a self-destruct magic circle that will activate in 20 minutes while a mysterious young man looks on from afar. Rias and Akeno then attempt to battle Kokabiel but prove useless against his powers. Meanwhile, Kiba confronts Valper and learns the truth of the Holy Sword Project and with the help of his friends from the past and present, Kiba successfully attains his Balance Breaker and together with Xenovia who summoned her Durandal, successfully destroys the Fused Excalibur. With Freed and the Excalibur out of the equation, Kiba attempts to kill Valper, only for Kokabiel to deal the killing blow. The episode ends with Kokabiel confidently telling the Occult Research Club that Issei can transfer his power to anyone as Issei prepares to transfer his powers to Rias.
#14 - My Training Begins!
Season 1 - Episode 9
Issei begins to train in an isolated area under the watchful eyes of Rias as they prepare for the rating game as Raiser Phenex decides to hold it in ten days.
#15 - As a Family Member of Rias Gremory
Season 4 - Episode 10
The fight between Kiba and Furcas begins with them equally trading blow for blow. Kiba then summons his Balance Breaker, which spawns several reinforcements. Kiba defeats Furcas in the first round, earning the Gremory team the victory. Rolling the dice, they are accumulated to ten, where Rossweisse and Koneko are sent out together, facing a knight named Liban Crocell and a rook named Gandoma Balam. Crocell uses his Sacred Gear to increase the gravity around Rossweisse, rendering her unable to move. Despite that, Rossweisse is able to free herself by teleporting Gandoma in her place. Although she releases a powerful attack, Liban survives and traps both girls in his gravitational field. Gandoma, who also survived, emerges from the ground and crushes Koneko. Although she wins, the Gremory house also loses a piece. Issei vows to hold onto his anger for when his time comes. The total comes to eight and Sairaorg publicly chooses his bishop, Coriana Andrealphus, while Issei goes out after Sairaorg reveals he chose Coriana specifically to fight Issei. Coriana attempts to distract Issei by stripping for him, but Issei wins after she tries to take off her panties, which according to Issei, breaks the rules of stripping. The total is once again added to eight, but because Issei cannot be sent out again, Xenovia and Gasper - wanting to avenge Koneko - volunteer to go out, where the face a rook named Ladora Bune and a bishop named Misteeta Sabnock. Sabnock uses a Sacred Gear which nullifies Xenovia powers, in response, Gasper attempts to remove the curse by pouring Issei's blood in a magic circle and goes out to fight to buy her some time. Despite being thrashed around by Ladora, Gasper uses Issei's advice and loyalty to the Gremory household to withstand the attacks, eventually buying enough time for Xenovia to recover and obliterate Sabnock and Bune, although Gasper sacrifices himself in the process. With seven members left on the Gremory team and only three left on Sairaorg's, the total is added to nine and Akeno, being the queen, volunteers to go out, where she faces Kuisha Abaddon, who is also a queen. The fight ends in seconds with Akeno's defeat due to Abaddon's ability to absorb opposing attacks and redirect them to wherever she wishes. With the total being 12, Sairaorg goes out to fight Kiba, Xenovia and Rossweisse, who volunteered in Issei's place in an attempt to wear Sairaorg down.
#16 - The Last Day of Summer Break!
Season 3 - Episode 5
Rias attempts to take Loki's life with her as Loki commands Fenrir to destroy Mjolnir. However, Kuroka and swordsman Arthur Pendragon capture Fenrir and take him to Vali. Healed by the Phoenix's Tears, Issei prepares to use the Mjolnir as the protagonists back him up to buy him time to charge Mjolnir and send Loki away, but not before Loki casts a curse on Issei. Sairaorg saves the others by defeat the Midgardsormr clone and suggests to Rias that they should have a Rating Game soon. On the last day of the summer break, the Occult Research Club and Rias' family go their separate ways. At Akeno's request, Rias has her go with Issei on a date. As Xenovia, Asia and Issei attempt to finish homework that they had not finished over the summer, Akeno helps Issei with his homework, where Issei says he feels bad for making Akeno help him. The next day, Akeno and Issei enjoy their date doing various activities while being trailed by Rias and her friends. The two manage to lose the group, but Issei then notices that they stumbled upon the red-light district, and tries to leave. Akeno then stops him, saying that if he wants to go in, she will go in with her, acting more like her age instead of her usual seductive attitude. Issei starts celebrating, but they are interrupted by Odin, Rossweisse and Baraqiel, who returning with them to Issei's house. While Rossweisse helps Xenovia and Asia finish their homework, Akeno decides to tell Issei about her past life with her mother, Shuri Himejima, a priestess of the Himejima clan, and how she found Baraqiel wounded after a fight which lead to her marriage with Baraqiel as well as her death and why Akeno hates Baraqiel. She offers herself to Issei, who became conflicted as this action will only cause more harm to the girl. Akeno then puts his hand on her breast, and the surroundings suddenly glow as Akeno's voice starts to speak out to the two, revealing Akeno's true feelings for her father and she does in truth understands that her father isn't at fault but she just needed someone to blame. Akeno apologizes to Issei for her actions and goes to prepare dinner. As Odin and Baraqiel are leaving, Akeno offers Baraqiel a bento box before he leaves. Akeno gives Issei a kiss thanking him while Baraqiel tastes the food Akeno prepared for him as he says it tastes similar to Shuri's cooking.
#17 - Interception, Commence!
Season 3 - Episode 4
The Three Factions are discussing how to deal with Loki. The members of the Sitri family volunteer to follow after Loki as Rias calls on Sir Zechs to help. Irina will join Rias, Xenovia, Issei, and Akeno. While gearing up and saving goodbye, the party is joined by Rossweisse, Odin's daughter. Issei promises to protect Koneko, who is a bit worried about their trip, before both the Gremory Clan and Sitri family set out to chase down Loki. Issei and Genshirou discuss their respective club presidents before Loki appears. Loki and Rossweisse get into an argument before Loki summons Fenrir's children and the Midgard Serpent. Issei suits up and tries to battle against the two children of Fenrir. Xenovia and Kiba come to his aid. Tsubaki uses Mirror Alice against the serpent, sending its flames back at it. Irina transforms into what looks to be an angel and uses the power of Michael to attack. Loki finds that the group is more formidable than he believed. Koneko and Akeno both unleash new powerful forms. Rossweisse tries to reason with Loki again but he claims to be fixing Lord Odin's mistake. Genshirou traps Loki with his upgraded whip, but Loki breaks free and rains hail down on the protagonists. The fighters are forced to use the remainder of their phoenix tears. The hammer of Thor appears as a gift from Odin. Rossweisse tells Issei to use it, but he is wounded by Fenrir right as he tries to use it. The Occult Research Club comes to his aid and try to take down Fenrir and the serpent. Rias however invokes her last bits of strength, swearing to exact revenge on Loki.
#18 - Young Devils Gather!
Season 3 - Episode 2
The Occult Research Club members have dinner at the Gremory residence with Rias' family members. Asia and Xenovia join him in bed, claiming that they are uncomfortable with the luxurious setting. The next day, Azazel has them each start on their 20-day training session. Issei trains with Tannin, a reincarnated former Dragon King. After finishing the training, Issei is still unable to activate his Balance Breaker, so Azazel suggests the need for a catalyst for the activation. In the evening, they go to a gathering of the major families in the underworld. Before the gathering, Issei visits Koneko and is surprised to discover her concealed Anthropomorphic features. Rias shares Koneko's true identity as a Youkai and past with him. Later, during the party, Issei learns of the identity of a figure he encountered during his training, Sairaorg Bael. Issei also encounters Ravel Phoenix, the little sister of Rias' former fiancé, and Issei's former opponent, Riser Phoenix. She introduces herself as a free bishop piece and invites him to visit her soon. Shortly after, Issei notices Koneko's abrupt departure from the party. He follows her with Rias, and it is revealed that Koneko, who was taken in by Sir Zechs and given to Rias, felt the presence of her sister, Kuroka, who killed her master and went missing passé. Kuroka and Koneko meet in the forest.
#19 - The Class Observation Begins!
Season 2 - Episode 8
Continuing from the previous episode, Vali proceeds to approach Issei but was stopped by Kiba and Xenovia as Vali rebukes them claiming that if they can't beat Kokabiel, then they would stand no chance against him. Vali then asked Issei what ranked does he think he's on in terms of strength as he tells Rias to nurture Issei properly, leaving after saying that. Resting at the sickroom after meeting Vali, Issei asked Ddraig about his relationship with Albion as Ddraig explains about the history of the Heavenly Dragons and how they turn into their current state. Back at his classroom, Issei is once again put into a comical situation due to Xenovia's lack of common sense as he runs away from the classroom. He then sees Rias and Akeno talking with Sona and Tsubaki, discussing about their meeting with Vali earlier and their concern about the upcoming class observation. At the day of the class observation, after finishing his class, meets up with Rias and Akeno until they heard about someone cosplaying in the gymnasium. Heading there, Issei meets Serafall Leviathan, Sona's older sister and the current Maou with the title of Leviathan. Back at the Hyoudou Residence, Issei and Rias' father and Sirzechs were enjoying the video they took in the class observation as Rias runs away in embarrassment after Sirzechs' comment. Issei then follows Rias as the two share another intimate moment until Sirzechs stops by and tells Rias that she has the permission to unsealed her other Bishop.
#20 - Beginning of the Decisive Battle!
Season 1 - Episode 10
The battle between the Phoenix clan and the Gremory clan begins! Issei uses an embarrassing finishing move but proves his worth. While the others fight more members of the Phoenix clan, Konecho is taken by surprise and is eliminated from the game. Issei prevails to fight the Queen from the enemy team!
#21 - Summer Break! Off to the Underworld!
Season 3 - Episode 1
Issei has recurring dreams of the deceitful actions of his first girlfriend, Raynare the fallen angel, that cause him to question the girls around him. When he woke up, he finds Rias, Akeno and Asia sleeping naked in his bed. After another hectic morning, he discovers that the Hyodo residence has been rebuilt as a three-story mansion including an training ground, bath and swimming pool. His parents are easily deceived, thinking that the Gremory family works in the construction business. Summer vacation is coming up, and the Occult Research Club members are going on a trip to the underworld. They enter by means of a protected train route, encountering Sona, Genshiro and Tsubaki also on their way to the underworld. Koneko is quiet and subdued during their trip. A surprise attack planned by Azazel helps determine what sort of training each member needs. While at the hot springs, Azazel expands Issei's perverted knowledge of the female body. Elsewhere, Kuroka expresses her intent to meet Koneko, her little sister.
#22 - Second Trimester has Started!
Season 3 - Episode 6
The second semester starts, as Irina now enrolls herself to the Kuoh Academy being in the same class as Issei. She then reintroduces herself to the Occult Research Club members as a member of the Brave Saints and Michael's Ace. After school, Irina notices a depressed Rossweisse at Issei's house after being left behind by Odin. Meanwhile Issei and Asia is sent shopping to help prepare for a welcoming party for Irina. On their way back, Asia almost trips and is supported by Diodora who reveals that he is the Devil Asia rescued in the past and proceed to propose to Asia. Night time in the Hyoudou Residence, Issei and Asia reports their encounter to Rias until Gasper arrives and tells them that the preparation for the welcoming party is complete. During the party, Azazel joins in and shows everyone in the party about Issei's uprising popularity with the kids earning himself the nicknames: Breast Dragon Emperor and Oppai Dragon, much to his chagrin and Ddraig's dismay. The next day, Issei's class prepares for the sports days and was tricked by Kiryuu into joining a three-legged race with Asia. In the noon, Issei joins his classmate on their preparation for the sports days as Issei starts practicing with Asia. Issei later has a dream on Asia marrying Diodora while his parents and friend send her off happily as Issei wakes up due to denial. Rias then shows the many invitations send by Diodora for Asia, claiming that she'll dispose the invitation while Issei and Asia heads to train for the sports day.While practicing, Xenovia convinced Asia to let Issei to fondle their breast but ws stopped by Irina who tells them todo it in bed. At the club room, Rias reveals the Rating Game tournament between the Young Devils and their first opponent for the tournament, Diodora Astaroth.
#23 - I'll Destroy the Holy Swords!
Season 2 - Episode 3
Issei and Kiba begin their fight against Irina and Xenovia, both ultimately losing to the latter two who then leave with Issei and Yuuto frustrated at their loss. Before leaving, Rias asks the two about the Fallen Angel who stole the Excaliburs learning that the one who was responsible was the Fallen Angel Leader, Kokabiel. Back at the Occult Research Club, Yuuto leaves the building with extreme frustration over his loss to Xenovia. After seeing Yuuto leave the clubroom with such frustration, Issei decides to help Kiba in his revenge against the Excalibur swords. Coercing Saji into his plans with Koneko's help, the three start to search for Xenovia and Irina, eventually finding them in a street. The trio then form an alliance with the two, helping them to retrieve the Excalibur swords while handing them an Excalibur sword so that Yuuto can destroy it. Kiba, touched by Issei and Koneko's action, agrees to accept the help of the two, thanking them for their help. Later at night, Issei meets up with Kiba and the others to start their plan to destroy the Excalibur. Meanwhile, a mysterious young man appears beside Issei's client.
#24 - That's Right, Let's Go to Kyoto
Season 4 - Episode 1
After learning that the group's sophomores will be leaving for a two day school trip to Kyoto, Asia, Koneko, Akeno, and Rias all try to sleep with Issei. During class the next day, Koneko pulls Issei aside and requests that she perform healing sage arts to help him recover the life force that he lost as a result of activating Juggernaut Drive in his fight with Shalba Beelzebub. She even goes as far as to request that they perform “bedroom arts” to further improve his recovery, which requires its participants to have sex with one another, but is interrupted by Rias. Later on, after a dinner hosted at the Gremory family estate, Rias and Issei encounter Sirzechs and Sairaorg, on account of an upcoming rating game between the Bael and Gremory households, Sairaorg requests that he and Issei spar together, to which the latter agrees. In the fight, Sairaorg proves himself to be an immensely powerful opponent, managing to break his armor with his bare hands and delivering extremely powerful attacks. Nevertheless, Issei is able to withstand the attacks and deliver some of his own, earning Sairaorg’s praise. In an attempt to spur Issei on, Asia asks that he touch Rias’ breasts in order to “power up”, which Rias begrudgingly agrees to. Though Issei is more than happy to do so, an amused Sairaorg decides to end their sparring match before he gets the chance, stating that they’ll finish their fight in the rating game, the team then heads home. On the day of their school trip, after having some fun with him on his bed, Rias sends Issei’s group off on the train, and even gives Issei a goodbye kiss, stating that she’ll feel much more lonely than she lets on.
#25 - I'm Going to Overthrow my Ex-Girlfriend!
Season 1 - Episode 5
Reynalle takes Asia's sacred gear and puts it into herself. As this occurs Issei, Kiba & Koneko are fighting the group of priests. Kiba shows his sacred gear which has the ability to take the holy light and absorb it. After Issei gets Asia from the cross- Reynalle released her to him-, he takes her upstairs to the main part of the church. While he is up there, Reynalle shows up and they end up fighting. During their fight if you are paying attention, Issei's sacred gear says "Boost" several times. One of first time his sacred gear is shown, Reynalle says it is a 'Twice Booster' which only boosts the user's power by 2 times. Issei wins the fight, but cannot kill Reynalle, because of his attachment to when she was part of this world as his girlfriend. Risa and everyone else in the Gremory clan shows up. Risa then explains Issei's sacred gear is not a mere 'Twice Booster' but 'Crimson Dragon Emperor Gauntlet' which has the power to kill 'Gods'. Reynalle tries to plea her way out of death to Issei and Issei asks Risa to deal with/kill Reynalle. Asia's sacred gear is then returned to her and is also brought back to life as a devil using a bishop piece from Risa's chess pieces.