Due to family troubles, Uesugi Ren and his sister Mihato run away from home without a plan for the future. Together they move to the city, but are short of money. Several coincidences lead them to meet Kuonji Miyu, a girl who comes from a rich household.
After the death of Himenokouji’s parents, Akito and Akiko were forced to live with separate families for six years. They finally manage to find each other and start living together. It quickly becomes apparent that Akiko has romantic feelings for her older brother, but Akito sees her only as a younger sister.
When three more girls – Nasuhara Anastasia, Nikaidou Arashi and Sawatari Ginbei – move into their apartment, Akiko’s hopes of living alone with her brother fade. What’s more, these girls also have a crush on Akito, which makes it even harder for Akiko to gain her brother’s undivided attention.
Fifteen-year-old Kasuga Kyousuke moves frequently due to his family situation. Both he and his two younger sisters have supernatural abilities inherited from their mother, the public disclosure of which forces them to relocate. On his first day in the new city, he meets a beautiful girl, catching a hat that the wind has blown off her head. He spends the entire night pondering, building himself an ideal image of her.
Aoba Riku has just changed schools because of his father’s job. On the very first day, he realizes that this educational facility is quite different from the schools he previously attended. After all, this was not his first change of residence. The secretary controls the school and the teachers themselves are extremely eccentric individuals. Students enjoy the great freedoms that the Tsugumi High School authorities are proud of.
After certain events in the past, Sado Tarou becomes a masochist. He realizes that he has a problem. Therefore, in high school, he decides to go to the school’s volunteer club for selfless help in search of understanding. There he meets the beautiful Isurugi Mio, who sets her sights on curing Tarou of his masochism.
After the death of his parents, Ryou and his sister Akane live together. Despite their difficult situation, they lead a relatively happy and normal life. Everything changes one day when they learn about a secret Japanese government project. Due to a declining birth rate, the Japanese government is testing a program in which two young people are forced to marry after having their personalities matched by a supercomputer.
Takagi and Nishikata’s last summer vacation before starting high school is coming up. Both of them, in their minds, are looking for an excuse to get together outside of school activities. Then they find an abandoned kitten and decide to take care of it, setting up a temporary cat bed on the grounds of a nearby temple they often pass by. Since neither of them can take him home with them, they come up with the idea that they will find a family for the kitten together.
Not long ago, Oomiya Shinobu was waiting for her friend Alice Cartelet to arrive from England to start high school with her in Japan. Now they are already in the last third grade.
Yokodera Youto is a master at hiding his true nature. He realizes that this creates a problem because he can’t honestly say what he thinks. Hearing rumors of a statue of a cat that can remove an undesirable personality trait, he finds it and prays for its façade to be removed. Unfortunately – every wish comes at a price, and the unwanted traits are transferred to someone else.
Touhohin Ikuto has a fight with his father that led him to make a rash decision to run away from home. He boards a ship, deciding to go on vacation alone, but the ship unexpectedly gets damaged by a powerful storm. After regaining consciousness, he realizes that he is still alive and has found himself on an isolated island. Soon after, he notices that the residents are exclusively beautiful girls.
Ninomiya Shungo is an average high school student who lives at home with his older sister Ryouko. However, Shungo’s life changes when a cute girl named Tsukimura Mayu arrives on his school grounds in a military helicopter. It turns out that Ryouko sent her, along with her older brother Mikihiro, to live in their home.
Kagamihara Nadeshiko and her friends entered adult life after finishing school and finding jobs. This resulted in the fact that they no longer had as much time to spend together on camping trips and excursions. In fact, they haven’t seen each other for a long time due to the distance separating them. Everything changes one night when Oogaki Chiaki invites Rin to an izakaya.