#1 - From Beyond the Twilight
Season 1 - Episode 1
Hashimoto Mayumi, a typical high school girl. She plans on seeking revenge on her classmate Kuroda Aya for bullying and torturing her. One day, she finds a strange ad regarding sending tormentors to hell. Is this hotline to hell real? Will she get her revenge?
#2 - Bonds
Season 2 - Episode 7
Ougi Emi’s family has changed ever since her brother, Ougi Tatsuya, died in a motorcycle accident. Her mother is ignoring the family to get the city to take the blame for her son's death. Tatsuya was everything for his mother and Emi tries to help her mother get over it, but her mother continues to be unconcerned for the well-being of her daughter. Emi learns that her brother had one of Ai's dolls but hadn't used it yet, now it belongs to Emi. One day her family becomes dysfunctional and she sends her mother to hell. After that, she realizes that she's better off without her mother.
#3 - The Girl Who was Taken
Season 3 - Episode 1
Since Ai's death, her companions have gone their separate ways. But Kikuri announces her return, and they gather as faculty and staff at a school.
#4 - The Women of the High Tower
Season 1 - Episode 5
Tamura Misato is an employee for the online shop Dead Line and often has to work insanely long hours just to keep up with her heavy workload. Kaifu Riho is the president and founder of the company and is a complete dud when it comes to computers, but she lies and takes all the credit for Misato's computer knowledge as her own and threatens Misato with going public about her minor shoplifting stunt if she refuses to comply with her rules. Her employees, meanwhile, are absolutely clueless about the president's "true" talents and believe that she's created the successful company all on her own when she really did nothing to help the company become successful. She's even tried to summon Ai and company many times for her own selfish reasons, but they've refused to accept her request and instead have secretly been investigating her company (and her illegal tactics) right under her eyes.
#5 - The Girl Lost In the Darkness
Season 2 - Episode 1
Onda Maki is being bullied in class, but she doesn't know who is bullying her. She spends every night typing her classmates' names into the Hotline to Hell engine, but always erases it. Her science teacher Kamishiro tries to help her, but Onda always refuses.Eventually, she finds out that Kamishiro is the one who has been bullying her and sends her to Hell. Onda has a new friend, and as they are working after school on a project, Onda discovers that her friend had been helping Kamishiro bully her.
#6 - The Rotten Fruit
Season 3 - Episode 3
Aspiring singers at the same talent agency, Jun bullied Masako until she gave up on her dream. After Jun becomes a pop idol, Masako demands that Jun support her own debut as a singer. Jun refuses. Enraged, Masako accesses the Hell Correspondence website, receiving Hone Onna as doll.
#7 - Caged Bird
Season 3 - Episode 2
Yuzuki is still disturbed by her encounter with Ai. Meanwhile, a middle school girl has developed a crush on a middle-aged shopkeeper -- and a grudge against her abusive husband.
#8 - Beloved Kei-chan
Season 2 - Episode 3
A girl named Tae-pon is obsessively protective of her neighbor, Kei-chan. She refuses to admit her love for Kei-chan because she thinks their relationship would change and then they would drift apart. She knows his girlfriend is a two-timer, but refuses to tell him because she's "protecting" him. Kei-chan enters her room through her window, admits he knows his girlfriend is cheating on him, and then sleeps with Tae-pon when she comforts him. She becomes afraid that their relationship is now in danger of changing and refuses to open her window when Kei says he loves her. She opens her window to see if he's still there, causing him to lose his balance and fall to his death. The next day, Tae-pon sends his ex-girlfriend to Hell for causing Kei-chan to be distraught enough to alter his relationship with Tae-pon and for calling him pathetic. Tae-pon moves to a new area and her new window neighbor looks almost exactly like Kei-chan...
#9 - The Possessed Girl
Season 1 - Episode 2
How nice would it be to be to be able to send someone to Hell with just a simple click of the button? A girl named Ryouko is haunted by a stalker.Desperate to get this despicable man from stalking her any further, she types in his name (only known to her as Stalker) on the Jigoku Shoujo web site, and later receives a call confirming her request. She meets Enma Ai and explains her situation to her and her team, but Ryouko finds out that it's not as simple as it appears ... not only will her stalker go to Hell, but so will she as a consequence for using their services. Is it worth the price of going to Hell for eternity?
#10 - Inaudible Cry
Season 1 - Episode 4
Junko-chan's life has been plagued by eternal heartache and sorrow due to the loss of both her parents at a very young age as well as the recent loss of her best friend and loyal dog Candy. She's horrified to discover that the doctor who was supposed to be taking care of Candy's injured body had actually been too busy chatting on the phone at the time instead of tending to the dog's care. By the time he finally looked at the dog, it was too late and the poor soul had already left its injured body. It's obvious that Junko-chan's now going to utilize Ai's services to get back at Honjou-sensei for ignoring her dog's pleas of help, but she initially doesn't want to go through with it because of her fears of spending eternity in Hell.
#11 - Bubbles Under the Surface
Season 2 - Episode 2
Yayoi's sister, Sumire is missing. She is constantly hearing the sound of bubbles from underwater. She after a while begins to realize her sister is dead. But because she doesn't know the identity of the killer, she can't get onto the website to get her sister's revenge. She blames herself for Sumire's death because Sumire vanished on a day Yayoi didn't walk with her. Yayoi falls into a fountain and has a vision of what happened to her sister. Sumire was kidnapped, raped, killed, and dumped in a lake, which explains the bubbles. Yayoi knows the identity of the killer and sends him to Hell for Sumire.
#12 - Cicada
Season 3 - Episode 5
A student's grandmother begins a vendetta against Mio, her teacher, for a supposed slight against her granddaughter Ririka. When Ririka refuses to comes to Mio's defense, Mio access the Hell Hotline.
#13 - Elder Brother
Season 3 - Episode 4
When the bullied Yukawa is rescued by the kendo-practitioner, Nishida Shin, Nishada becomes Yukawa’s hero. However, he fails to save a man assaulted on a bus, and Yukawa's image of his hero is shattered. He accesses the Hell Correspondence website, receiving Ren as a doll, to send Nishida to Hell.
#14 - The Window on an Early Afternoon
Season 1 - Episode 6
Yasuda-san is the helpless victim in this episode, and she is being bullied by a woman named Amiko Todaka-san whose husband runs a large branch office. Unfortunately, her daughter is being bullied at school as well and doesn't know why everyone is so hostile toward her. Her husband's having a hellish time at work as well and blames his wife for starting trouble with the boss's wife even though she's done nothing to cause this dilemma. As if that weren't enough, Yasuda-san is accused of cheating on her husband with another man when in actuality she was attacked and possibly even raped by the man that Todaka-san had sent to attack her. Yasuda-san's daughter doesn't understand why her entire family is being victimized by Todoka-san, but she isn't going allow it to continue any longer and summons Enma Ai to help her uncover past events that started this whole mess.
#15 - Secret
Season 2 - Episode 4
Yagisawa's wife, Chinami, is in the hospital, fighting an illness. He'll do anything for money to help her. He enters the site to get revenge on Hhouki, the man who tricked him into killing a man for money. Hhouki wanders into the hospital and tells Chinami that her husband killed a man, causing her to go into a coma due to her distress. He eventually send Hhouki hell (for refusing to help his wife and blackmailing him). When he returns to the hospital to tell his wife that everything is okay, she no longer remembers him. Kikuri is seen wandering around the hospital and having a strange effect on Chinami. In this episode, she leaves the mortal world with Ai and officially becomes part of the group.
#16 - Rampage to Hell
Season 2 - Episode 5
Yamada Leon, is constantly bullying Oi-chan. So Oi-chan sought a contract with Ai but he changed his mind after learning about the consequences. Leon falls in love with a high school girl named Miyahara Izumi. He plans to confess his love for her and leave the gang he is in. However, Leon's gang leader refuses to let him leave the gang. After Leon overhears Oi-chan talking about the Hell Girl, he made Oi-chan show him the Hotline to Hell. Leon's gang leader tries to kidnap Izumi to stop Leon from confessing to her. However, as he kidnaps Izumi, Leon sends him to hell. After continuing to bully Oi-chan, Leon steals his wallet and plans to finally confess to Izumi once again. While he's speeding down the street, he crashes and goes almost immediately to Hell.
#17 - The Place Where the Sun Hits
Season 2 - Episode 6
Hosono Souta is a boy who always sits in the infirmary. Because of this, his classmates make fun of him. He falls in love with a classmate, Nitta Kiwako, because she was the only one who did not make fun of him. He dislikes her current boyfriend. Hosono attempts to access the Hotline to Hell, but Ai rejects him. While Hosono is stalking Kiwako at a bowling alley, he overhears her boyfriend suggesting to his friend, Sawazaki, that he will "lend" Kiwako to him so that Sawazaki can finally lose his virginity. Ai appears to Hosono that night, but while he begs her to save Kiwako, he refuses to sell his soul in exchange for revenge. Kiwako later tells Hosono that she accessed the Hotline to Hell and has sent her horrible boyfriend to Hell. Hosono is shocked that she would agree to go to Hell for that and turns down Ai's help once and for all. At the end of the episode it is shown that Hosono purchases a blade, and plans to kill Sawazaki.
#18 - The Filthy Mound
Season 1 - Episode 3
Muroi Kouichi was a high school student with high aspirations to play in his first baseball tournament, but his short life had been plagued by the constant bullying from the "star" player Hanagasa Mamoru who enjoyed tormenting him with his baseball bat, and it became so bad that it eventually lead to his death or even suicide. His friend Iwashita had kept the bullying a secret until the very end, but it ended up backfiring on him when Muroi's mother publicly accused him of murdering her son instead of blaming the real culprit. Iwashita decides to take matters into his own hands and summons Enma Ai to take care of the dirty work for him. Will he pull the string?
#19 - My Teacher
Season 3 - Episode 6
A group of students infatuated with Hone Onna compete with one another for her affections. The competition turns ugly, and one of the students accesses the Hell Hotline.
#20 - A Broken Disguise
Season 1 - Episode 7
Ayaka is an aspiring actress who is adopted by Kurenai Midori because of her potential talent for acting, but it's pretty obvious from the very beginning that she isn't nearly as talented or as gifted as her adopted mother had hoped for. Instead, she appears to be rather clumsy and untalented since can't even get her role as a weeping willow right, and she even has to endure an embarassing lecture from her mom in front of the entire class. She pathetically summons Emna Ai in hopes of teaching her mother a lesson in attitude adjustment since she's incapable of confronting her about it herself, but she thinks twice about her decision in revenge after getting a glimpse of spending eternity in Hell.
#21 - Fake Hell Correspondence
Season 2 - Episode 8
Baba Shouko is a teacher everyone dislikes because she frequently scolds students and is very strict. A fake Hotline to Hell was created by somebody and it is circulated among students who were just scolded by Baba sensei. Tracing was carried out and they concluded that a student named Ikami Waka created and circulated the fake Hotline to Hell. However, Ikami claims that she did not do it. On the same night, another teacher named Kuriyama Mami calls Ikami and tells her that it was Baba who made the fake Hotline to Hell, blames her for it and told Ikami to come to school. Mami-sensei waits in school for Ikami to come and tried to convince Ikami to access the real Hotline to Hell to send Baba to hell. To her surprise, the one who turned up is Ai. Mami and Ai already knew each other from their pasts. The truth is Mami was the one who created the fake Hotline to Hell and blamed the students for it. It was all because Baba scolded Mami when she was young and she blames Baba for all her problems. Baba comes and types in Mami's name into the real Hotline to Hell, as a punishment for an attempt to use her students as sacrifices. Baba agrees to go to hell as she blamed herself for coaching a teacher like Mami.
#22 - Lost Inari
Season 3 - Episode 9
A low-profile girl named Inao Kaede claims to be a fortune-teller. At the sign of her continued success, a female student named Nishino apologizes to Inao for previously making fun of her fortune telling and requests she kill a college student who she claims is stalking her every day.
#23 - The Six-Script Lantern
Season 3 - Episode 13
Azusa Mayama feels that chief of investigation, Norihisa who is Akie's father, halted investigation on an automotive accident involving her father and a son of the prestigious Tsujinobashi family, reporting it as an accident to prevent the truth from being known. In order to get revenge, she befriends Akie, intending to betray her.
#24 - Across the Blind Alley
Season 1 - Episode 14
Sai Kirino seeks revenge for the death of the father due to a secret that exists between him and her primary suspect, Mayor Ryouzo Kusunoki. Hajime Shibata succeeded in making him apologize, but it was too late.
#25 - Split Shards
Season 1 - Episode 12
Akane Sawai stopped going to school due to emotional problems. Now, she locks herself up to her room and only opens up to her textmate, Yoshiki Fukasawa, who constantly visits her to check on her and convinces her to go to school. Sawai gets irritated by this, and is convinced by her textmate to send Fukasawa to hell. She finds out that her textmate is really Fukusawa and after coming to an understanding, Fukusawa convinces Sawai to send him to hell.