Mitsuki and Yuya become stepsister and stepbrother because of their parents' marriage. Mitsuki can't get along with her new family and Yuya doesn't know how to approach his new stepsister. One day, Mitsuki becomes possessed by the spirit of Hiyori. Hiyori likes Yuya and believes Yuya can help her get to heaven. Hiyori places a leather chastity belt upon on Mitsuki and a plan takes place to help send Hiyori to heaven.
A school appears peaceful from a distance, but a fierce gambling battle takes place once again. Yumeko Jabami is involved in the battle.
Hyakkaou Private Academy. An institution for the privileged with a very peculiar curriculum. You see, when you're the sons and daughters of the wealthiest of the wealthy, it's not athletic prowess or book smarts that keep you ahead. It's reading your opponent, the art of the deal. What better way to hone those skills than with a rigorous curriculum of gambling? At Hyakkaou Private Academy, the winners live like kings, and the losers are put through the wringer. But when Yumeko Jabami enrols, she's gonna teach these kids what a high roller really looks like!
Hatori Matsuzaki is a female high school student. She has a crush on her childhood friend Rita Terasaka and believes he will eventually choose her as her heroine, but Rita Terasaka begins dating Miho Adachi. Meanwhile, the most popular male student, Kosuke Hiromitsu takes an interest in Hatori Matsuzaki.
Tsugumi Dozono works at a large electronics company in Tokyo. She likes to spend long vacations at her grandmother’s house in the countryside. When her grandmother dies, Tsugumi Dozono decides to live in the house full-time, and to work from there as well. However, one day she encounters a middle-aged man in the house, who tells Tsugumi that her grandmother gave him a key to the annex house when he was her student. The two share the property, although Tsugumi still does not know the exact relationship that her grandmother had with this man.
Ebisuzawa Kurumi, Takeya Yuki, Wakasa Yuri, and Naoki Miki all attend the same high school. They also live on campus at the school. The girls enjoy their time at the school until students become infected by a virus and turn into zombies. The girls are surrounded by student zombies and they struggle desperately to survive.
A university student finds himself wrapped up in the bizarre world of his next door neighbor, learning about his history and relationship with a girl who changed his life.
Shun and Nagisa first meet and fall in love during their first year of high school. While Shun is graduating from university, Nagisa tells him that he doesn't see a future for them. Despite Shun's strong feelings, they go their separate ways. Years later, Shun is now a store owner, living alone in a rural area. Out of the blue, Nagisa arrives with his six-year-old daughter, Sora. Spending time together, Shun realizes he still harbors feelings for Nagisa. Can Nagisa reconcile with his feelings for Shun, which have been there all along?
A rock band writes a song called "Fish Story" that is foretold to save the world. The song exceeds the boundaries of space and time and ties people and their stories together.
On board at the boat Kanikosen, where fish and crabs preserves, forced workers to work under miserable conditions, with minimum wages. Some can not cope with conditions and even death from malnutrition, and is also the supervisor of the more vicious variety. Shinjo, one of the employees, trying to convince the others that they will get good luck and fortune in his next life, and persuades them because they commit suicide to get there faster. It ends, however, in a single major failure. Rather than flee Shinjo being picked up by a Russian ship. Once there, he is overwhelmed by the social conditions that are completely different from those he has just left and decided therefore to return to Kanikosen to save their employees.
Kasumi doesn't know what love is and she doesn't have any feeling of romance. Due to her sister's marriage, her mother arranged a formal marriage arrangement without her permission. At the meeting, she met a man who is just seeking a friend.
Sachiko Suzuki is a female high school student. She claims that she is an alien and her mission on Earth is to conceive a child with a human man. Sachicko seduces her class teacher Mr. Fukuda. After their intimate encounter, Mr. Fukuda becomes becomes convinced that Sachiko is not a human. Meanwhile, female student Kobato Hagimoto knows that Mr. Murata has a crush on some male students. Because of this, Mr. Murata is treated as a pig by Kobata until he can't bear the situation anymore.
At an all female high school, a senior of the radio club becomes fascinated with the club's newest member. As graduation nears and the summer heat rises, so does the sexual tension between the girls.
Giko Nokomura is a female student at Nightingale Academy, who carries around her very own chainsaw. One day she begins to be attacked by modified corpses created by one of her classmates, Nero Aoi . She tears her way through the corpses and busts into Nero's hideout. Why is Nero so intent on attacking Giko?! The reason will shock you!After her battle with Nero, she encounters a new enemy. It's the leader of the Nightingale Academy Student Council Guardians, Nemesis.
Shiori has just moved to a new apartment. One evening, she hears a mysterious voice that claims to be "from the future" asking her to trail Susumu Hirano, who lives next door. Shiori in an attempt to solver the mystery began to investigating more and more about Hirano until she gets attracted to him.
Yukina Toriyama (Tao Tsuchiya) enters a university of science after prepping for one year for her entrance exam. At first, she is shocked by the atmosphere at her school. She becomes attracted to senior student Kei (Mahiro Takasugi). Due to Kei, Yukina joins the “human powered flight” club. The club targets the "Tori Ningen Contest." Yukina wants to partner with Kei to fly in the sky, but she is partnered with Sakaba (Shotaro Mamiya) whom she does not like.
Sato is an employee conducting a survey in front of Sendai Station. Saki takes the survey and the two ultimately become a couple. 10 years later, Sato proposes to Saki on the occasion of their 10th anniversary.
A samurai from the Edo Period time travels to present day Japan where he meets a divorcee and her son. Soon, he discovers a passion for making pastries.
Higashiyama Haruto is a 34-year-old Japanese history teacher who combines good looks with an honest and friendly personality. When he has been assigned to Nitaka High School, a school for advanced students, Haruto immediately attracts the attention of his female students. But he has a secret that he cannot tell anyone; he wants to be killed by a beautiful high school girl. Obsessed with such a bizarre desire, Haruto approaches four beautiful girls of different types, Maho, Aoi, Kyoko, and Aika, according to the perfect crime scenario he has devised. Who among the four is the high school girl that Haruto has been longing to be killed by for nine years?
There is a schoolgirl who carries her own personal chainsaw. She was attacked by a dead body who was created by her classmate one day. As such, she does not understand why she was attacked by a classmate. To find the answer she ventures into the enemy's base. There she finds out the reason for the assault.
