Celine is drunk and spreads her pollen, making Saki and the others fall for Rito. Later, a misunderstanding by Momo sparks an interesting turn of events.
After her father is mortally wounded by Yomi in an attempt to rescue her even with the use of Byakuei, Kagura stays by his side as he slowly dies, having a heart-to-heart conversation with him for the first time. Meanwhile, the remaining members of the SDCD decide to confront Yomi directly themselves in an industrial area led by Ayame and Kiri with disaster on the SDCD operators despite having superior numbers when they fought Yomi. After her father passes, Kagura inherits the Sesshouseki from him and receives a new sword from Michael: Michael 13 before she sets out to take down Yomi herself and eliminate the threat of the Sesshōseki in her body.Watch Now:Amazon
Rito avoids Lala while Saki daydreams of Zastin. Everyone prepares for Valentine’s Day, and Rito is the object of desire for many.
Chizuru wants Kouta to say he loves her, but he is very hesitant. Chizuru tries several methods to make him say it, but gets frustrated. Tayura asks Akane out on a date and she accepts, but says she wants to go to an art gallery instead of usual popular date spots like an amusement park. Kouta admits that he loves Chizuru in the end when he spots her crying in the rain on the bridge where they first met. Kouta and Chizuru become lovers, and Nozomu barges in saying that she accepts their relationship, and that she in turn will be Kouta's mistress, a thing which to Kouta's dismay Chizuru accepts.
Mikan and Rito’s parents are never home, so the approaching Christmas holiday doesn't excite them, but Lala still helps fulfill one of Mikan's wishes.
Meeting Pina Sformklan Estoh, an anime otaku princess makes her move, much to Principal Kaede Tenjōji's enthusiasm. Suggesting, Akiharu and Tomomi for assistance in helping to create a fabulous doujinshi of hers, she recommends them to finding suitable candidates for a cosplay photo gallery.Watch Now:Amazon
Yami falls ill with a fever, and Rito rushes her to the hospital. As she recovers, Yami questions why Rito would help her.
The story begins with Rito rudely awakened by each Deviluke alien. Rito explains his routine life and is most concerned with Momo due to her deceptive intents. As Rito arrives to school, he meets Haruna. Lala tries to encourage Rito to confess to her, but Rito pushes Lala to a corner and explains to her the situation is complicated as people are legally allowed to marry one person. Out from nowhere, Celine clings onto Rito. Momo and Nana surprise everyone that they have enrolled in their school. Now students, Momo winks at Rito, reminding him of the conversation last night in the bathtub. Momo overheard Rito's concern about marrying multiple girls and explained to Rito that many girls love him and marrying them all would make everyone happy. As the future king of Deviluke, he can have many concubines. Momo vows to create a harem for Rito. During class, Momo becomes popular among the boys while Nana greets a mysterious girl looking out the window. Nana impresses her with her ability to understand animals. The girl introduces herself as Mea. Later, Momo finds Yami at a bench. As Yami is an obstacle to her harem plan, Momo tries to secretly enlist Yami in her harem plan by convincing her to enroll. The conversation gets cut short when Rito runs in panic stating that the other boys suddenly went violent. The other boys arrive on the scene and attack Yami, forcing her to use her weapons. After Yami and Momo restrain the boys, Yami hears a mysterious voice reminding her that she's an assassin assigned to kill Rito.Watch Now:Amazon
Rito wakes up and finds himself inside his bathroom with Mea. Mea tests Rito's beast-like moves and asks Rito if he experienced something similar. She reads Rito's memory about Momo and her harem plan. Yami cuts Mea off from reading Rito's memory and warns her to not bother Rito. Mea walks off and learns about the harem plan and how she and Momo are competing for Yami. Later, Nana introduces Mea to Lala and friends. Rito sees Mea and realizes her from the dream earlier. As Mea speaks obscenity to Rito, Momo considers adding Mea into her harem plan. Afterschool, Rito spots Yui and offers to walk home together since Mikan is cleaning up Saibai's atudio and Momo and Nana are with Lala at an important event. Yui is first skeptical but accepts. Momo secretly escapes from the event, a Magical Kyoko Costume Show, and observes Rito walking home with Yui. She finds this a perfect opportunity to advance her harem plan and devises a way to lure Rito and Yui into Rito's house. She first uses the princpal to chase them toward Rito's home and simulates rain to get both of them inside. Inside, Momo surrounds the home with a barrier and creates a romantic scenery by simulating rain and a blackout. Rito accidentally falls onto Yui, giving Momo signs that her romantic scenery is working. Her patience runs out when she finds Mikan and the others trying to get inside. Then, Mea shoots a laser beam and destroys the barrier, breaking Momo's scenery and exposing Rito and Yui to everyone. Lala tells Rito there was no rain today and Mikan sees Momo's tail, adding to her suspicions about Momo. Meanwhile, Mea tells master she was only messing with Momo's harem plan.Watch Now:Amazon
As Rito attempts to keep Haruna away from Lala’s gadgets, they accidentally activate one and are warped to another location -with no clothes!
After witnessing Selenia kissing Akiharu, Tomomi's feelings for Akiharu reaches a breaking point. Tomomi invites Akiharu to take her on a date, while Selenia spies on their little affection around in town. By the end of the day, Tomomi and Akiharu talk about their childhood conflicts that Akiharu confirms he wanted to be her "bride".Watch Now:Amazon
When Lala and Rito are running late for school, they'll realize that using a teleportation device get to school faster can have some visible consequences.
Haruna feels self-conscious about the size of her bust, and later finds a stray dog! Mikan and Yami switch bodies to experience each other’s abilities.
Akiharu's roommate Kaoru Daichi, who in reality is a cross-dressing girl because of her father's strict desires, has an uncomfortable time cooperating with Akiharu. Though, Kaoru has a chance to be girl for one day at an upcoming ball for cross-dressing students.Watch Now:Amazon
For today's practical exam to prove one's faithfulness, Tomomi has Akiharu accept her partnership, and gives him an unusual task in following Mimina Ōsawa around, an artist who has been hospitalize most of her life.Watch Now:Amazon
A suspicious-looking boy, Akiharu Hino, transferred to Hakureiryō Academy, a boarding school once known for only high-class young ladies. However upon his arrival, he encounters Selenia Iori Flameheart who accuses him a delinquent and causes uproar throughout the campus, until Akiharu meets his wicked childhood friend Tomomi Saikyo who clears the misunderstanding by telling everyone an embarrassing future goal of Akiharu's.Watch Now:Amazon
Momo sneaks into Rito’s bed. Mikan, who wants to catch Momo in the act, sneaks in instead! Meanwhile, Celine is drunkely polinating and this time, Yami is under fire.
Rito delivers assignments to a sick Yuki who panics when a boy is in her room. Later, Rito tries on Lala's glasses and discovers a surprising trick with them.
Having another usual day of butler duties, Pina then gives Akiharu passport tickets to a special waterpark "Try Aqualand" as a gift. Tomomi and Selenia confront each other about their affections for Akiharu. Principal Kaede announces for the annual sports day, that the girls use as an opportunity to decide who goes with Akiharu since he only haves two tickets.Watch Now:Amazon
Chizuru, Kouta, Tayura, Nozomu and their friends go to a beach that is only known to spirits. After some trouble changing (no changing rooms and Nozomu having a rather unusual swimsuit) and an attempt at sunbathing, they discover a beach house nearby which is run by none other than Chizuru's mother Tamamo, and Yukihana. Tamamo once again tries to win Kouta's affections, much to Chizuru's frustration. Back at the beach, the group enjoys themselves with a barbecue and fireworks, but Chizuru is bothered because she cannot be alone with Kouta. Akane gets into trouble when she drifts too far offshore and is rescued by Tayura, making her warm up a little to him. Chizuru asks Kouta to take a walk with her on the beach under the stars, and eventually asks him how he feels about her.
Momo takes to playing dating sims to figure out how to get her harem under way. At school, a group of students form a Momo fan club, which ends up keeping her away from Rito.
Chizuru and Kouta treat Ai and Ren to a meal. Seeing as the two are poor, this has magnanimous effects on them and they regret the whole potion situation. In turn, they ask to be taken off of the mission and are electrocuted repeatedly by Nue. Minori Mitama summons demons to attack the school, and during this time a sleeping sand is released on all the humans. Nue enters and takes down Nozomu, and chases Kouta and Chizuru down. When they are cornered, Kouta refuses to leave Chizuru to her death and discovers his fox powers. Kouta possess Chizuru and turns into a five-tailed fox. He defeats Nue and Minori Mitama, who makes an oath to make Kouta her own one day. Chizuru's breasts, and thus her spiritual powers, are restored.
Upon seeing the score result for an exam, Selenia and Tomomi remark their days since their first year meeting at Hakureiryō Academy, where they eventually become rivals to see who's the most diligent and growing lady. Meanwhile, the academy's water system goes out-of-order, and have to use a indoor natural hot spring for the time being, where the servants and uppers are getting into perversions.Watch Now:Amazon
Aoi searches for her teddy bear, Daisy, only to find that Jun had just put it in her room. Later, Yachiyo overhears a conversation between Jun and Mitsuki and assumes the two are going out with each other. As Jun notices her weird behaviour, he takes some advice from Popura to put some pressure on himself to sort things out with her.
Jun takes Yachiyo to buy a cellphone, whilst Kozue takes a liking to Yohei. Meanwhile, Mitsuki becomes suspicious of Jun's familiarity with Yachiyo whilst Yamada runs away after Sōta scolds her.
Popura and Jun end up catching colds due to Aoi's clumsiness, so Kyōko calls in two of her juniors, Yohei and Mitsuki Mashiba, twin siblings who don't get along. When Kyōko offers to put someone else in charge of looking after Inami, Sōta becomes upset and falls out with Inami, but Inami soon manages to build up the courage to make up with him.
Sōta becomes depressed when he discovers Nazuna has grown as tall as him and has Popura act like his little sister for the day. Mahiru becomes jealous of this and works with Hiroomi to try and get Sōta to call her cute. The next day, Kirio comes to Wagnaria to look for his sister, but finds himself coming into conflict with the men, whilst Hiroomi attempts to keep him and Aoi from meeting each other.
Sōta's novelist sister Izumi enters a slump when she assumes he is dating Popura and will stop paying attention to her. She decides to go on a journey where she ends up meeting Mahiru who helps cheer her up. As Sōta looks after Izumi, Nazuna helps out at Wagnaria, which annoys Aoi who believes she is outshining her. After hearing about it, Nazuna puts on an act to make Aoi feel better about herself.
That Lala and her inventions. One of Lala's crazy contraptions ends up getting Rito and Yami stuck to each other by their hands!
Mahiru finds herself a bit too close to Sōta for comfort when he tries to stop a tower of boxes from falling on her, which leads her to become a bit fearful of him the next day. This turns into a complete freakout after she discovers Sota touching her head whilst she was asleep and stops coming into work. Later, Poplar gets locked in the freezer and initially suspects Jun, but soon finds Aoi just did it accidentally. After Mahiru doesn't show up at work all week, Sōta goes to visit her in Kotori-guise to apologise and exchange phone numbers.
Mahiru meets a boy calling himself Kirio Yamada, who she believes might be Aoi's brother. As he is able to withstand her punches, Mahiru ends up conversing well with Kirio, who starts developing feelings for her, but Sōta becomes downhearted when he sees the two getting along. He begins acting strangely the next day and ends up bashing his head against the wall, leading him to think he might've become a masochist. Later, Kozue manages to get the waitresses to dress up in animal cosplay.
Popura and Aoi try to help Mahiru train to cure her androphobia by dressing her up as a guy, but with no such luck. Later, Sōta and Mahiru start exchanging text messages, which causes Izumi to worry. Sōta also runs into Kirio, who manages to deduce that Mahiru has feelings for him. Later one night, Aoi gets locked out of the restaurant, but Jun manages to sort things out for her. Later, Popura and Aoi try to help out Mahiru's progress by exposing her to the other men, only for her to nearly end up punching Hiroomi. Meanwhile, Popura becomes elated when she is finally able to reach the broken items report sheet that was normally out of her reach.
Whilst out shopping for some more cream, Kyōko and Yachiyo end up meeting Otoo's long lost wife, Haruna. As Yachiyo debates whether to tell Kyōko about her, she disappears again. As Yachiyo feels guilty about it, Mahiru learns about Jun's one-sided crush on Yachiyo and starts feeling sorry for him, leading Sōta to believe she has a crush on Jun. With some support from Jun, Yachiyo apologises to Otoo after he returns and cheers up.
Whilst Popuar is pleased to finally reach the report sheet, Sōta is horrified by the thought of her growing taller. Whilst talking about the future, Aoi ends up turning a statement from Popura that she might have to leave Wagnaria some time in the future to a rumour that she is actually quitting, which she spreads to the other staff members. As the staff have their concerns over this, much to the annoyance of Maya the bird, Popura is confused by their weird reactions to her. After Maya helps Popura with her worries, the truth about Aoi's rumour soon comes out.
Mea speaks with the mysterious voice about her day. The voice reminds Mea about her job; killing Rito and reverting Yami back to an assassin. Meanwhile, Momo warns the dangers of Yami to Rito and convinces him that Yami may change back and kill him anytime. Next, Momo is surprised to see Mikan invite Yami over for cooking lessons. Nana also comments about making a new friend to Lala. During the dinner service, Rito freaks out over Yami's Taiyaki soup and thinks she may have set a trap. He nearly vomits and asks to go shopping. During bedtime, Rito finds Momo in his bed. Momo warned Rito earlier that she must protect Rito to allow the harem plan to progress. Yami may kill Rito in his sleep. As Rito tries to sleep, Momo caresses him every way, forcing Rito to shove her aside. As Rito later takes a drink, Yami asks Rito for a talk. Yami explains about her cooking lessons and compares it to her attacks. Momo mistakens it for an assault and jumps down to defend Rito. Yami only wanted to know if Rito enjoyed her Taiyaki soup. The next day, Yami also becomes enrolled. Mea finds with Yami and explains how she is Yami's sister with similar abilities. During class, Yami does not get along with other students and blocks people from befriending her. Momo offers to help but get rejected too. Meanwhile, Mea asks Nana about Rito. Nana simply replies, "He's a beast." Her rambling comments about Rito only interests Mea, who then goes to find Rito herself. Momo then talks to Mikado-sensei, who loved Yami being enrolled. She tells Momo how Yami's lifestyle has been nothing except fighting. While Yami is sitting on a bench wondering about her feelings Yui approaches Yami and tells her that not understanding their own feelings is normal, and she too does not understand her own feelings. Then Nana asks Yami if she's seen Mea. While Rito is asleep on the roof Mea climbs on top of Rito and whispers how she'll be able to know what he's truly like once they are "joined together".Watch Now:Amazon
Popura and the others try to think of ways to help Sōta get along better with Kyōko. Wanting to be spoiled in a similar manner to Kyōko, Aoi starts learning how to make parfaits, much to the dismay of Jun. In order to stop Kyōko from eating everything in the store, Hiyoomi tells a white lie which leaves her stunned. When Sōta finds a lost girl, Kyōko is told to look after her, and even avoids taking her food. After the girl is reunited with her mother, Jun gives Kyōko some food as thanks.
Aoi becomes curious about Hiroomi's secret life and drags Popura into stalking him, despite the fact he is completely aware of it. Later, Popura tries to get Sota to treat Mahiru nicer. Tired of Jun's teasing, Popura tries to get revenge on him which does not go to plan. Meanwhile, Aoi acts very clingy around Otoo after he comes back from his recent trip.
Popura becomes upset with Sota constantly calling her small. Later, Sota becomes devastated when Kyoko kills a bug, inadvertently insulting Popura and Inami in the process.
Rito finds Momo in his bed again. Momo reminds Rito about her harem plan and advises him to be careful of Mea. Meanwhile, Mea is worried that Nemesis is not responding to her. She tries to hide her feelings from Nana who is inviting her to a bakery. Elsewhere, Tearju thanks Rito for helping her and asks him if Momo has new information about Mea. Momo is more concerned about Yami skipping classes. Tearju understands Yami's motives about staying away from her and wishes to see her in school and Mikan, Yami's friend. As Rito thinks about the friendship, Lala bumps into him and accidentally drops an invention. Rito activates it turning him into a mouse. Being small, Rito can easily see girl's underwear, making him uncomfortable. He desperately searches for Lala but his small size makes him vulnerable to being stepped on. His escape attempts eventually lands him under Yami's clothing. Rito manages to escape with her underwear but passes out. Mea finds Rito and remembers Nemesis message about weak people being weeded out. She helps Rito anyways and Rito recovers in time for a beating from Yami. As Yami walks off, Mea asks Yami about feelings and how Nemesis has never taught her this subject. Yami tells Mea that she should discover it herself. Afterschool, Rito finds Mea on the roof in her battle clothes and asks about her motives. He tries to convince Mea not to rely only on her master Nemesis but it enrages her. Mea seduces Rito with her Psycho Dive ability, but alien enemies also approach and attack Mea, leading Rito and Mea on a wild rampage. During the fight, Mea realizes that Nemesis is reminding her that she is a weapon. Nana also spots Mea in her weapon form.
Darkness seeks someone to do ecchi with. The principal offers himself but Darkness sends him to the Arctics. She pulls her true target, Rito, out of class and plunges him into the swimming pool. She manipulates the pool's water to grope everyone including Tearju, setting up a place to kill Rito. Darkness enjoys Rito's gestures and plans to inherit his techniques by swallowing him. Momo and Nana intervene, but Darkness creates clones of Rito who molest them. They respond by making everyone, including Rito, evacuate. Darkness then recalls how she first awakened when she lost Tearju. She attacked the organization, split Planet Kild in half, and ended up battered in front of Mikado. Nemesis is satisfied with Darkness until she mentions her desire to toy with Rito because of his mastery with molestation. Meanwhile in class, Yui tries to silence everyone about Rito's kidnapping but Lala chooses to investigate, sensing serious danger. Yui and Haruna later investigate on their own with Yui suspecting that Lala's inventions are causing it. They bump into Rito and Darkness in whom the latter demonstrates her wormhole ability by indirectly groping Haruna and Yui. When Darkness prepares to fatally attack Rito, Lala arrives. Darkness also sends Momo and Nana to Mea's apartment. Nana observes the room and confirms that Nemesis is lying about Mea. As for Mea, she orders Nemesis to return her body but Nemesis refuses stating that they were born to coexist. Nemesis promises Mea to return her body after Darkness kills Rito but Mea objects. Mea also has friends and no longer needs to rely on Nemesis. Like Ren and Run, people can separate at adulthood. Nemesis refuses and restrains Mea more until Oshizu, summoned by Mea, performs exorcism.