Akagami Akemitsu’s father was famous for surrounding himself with many women. The boy greatly admired his father as a child. Unfortunately, as he grew up, rumors began to spread about him. Akemitsu decided not to follow in his father’s footsteps and lead a decent life.
After the death of a younger sister and the divorce of his parents, Touno Kaoru is unable to find his place at home. After a harsh confrontation with his drunken father, he runs out of the house and discovers a mysterious tunnel. Confused by what he sees inside, he runs away, picking up a parrot along the way that looks identical to his long-dead pet.
Sixteen-year-old Hoshino Ai is a talented and beautiful idol adored by her fans. She moves the hearts of large masses. She is the epitome of an innocent young girl possessing a personality that attracts like a magnet. Amemiya Gorou is a doctor at a hospital in the province and a big fan of Ai. So when the pregnant idol shows up at his hospital, he gets quite shocked.
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.
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.
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.