Ayako
Three siblings share a home with their parents living a happy life. The oldest one is good-looking guy, which is something of a contrast from his younger brother who is at school. The youngest one is the girl and has two brothers to protect her. And then there is Sakura, the family's dog who is always by their side. The fate of this quirky but happy family changes drastically after Hajime, the family's hero-like figure, encounters a tragic accident...
Maho
After a long and unsuccessful struggle to get pregnant, convinced by the discourse of an adoption association, Satoko and her husband decide to adopt a baby boy. A few years later, their parenthood is shaken by a threatening unknown girl, Hikari, who pretends to be the child's biological mother. Satoko decides to confront Hikari directly.
Shiori
Akari is a first grade high school student. She is positive, realistic and outgoing with romance. Akari though is not good at expressing her feelings. She become friends with Yuna, who attends the same high school. Yuna has a hard time talking with strangers and she is passive with romance. She has never been in love, but she dreams of having a romance like those drawn in manga. Even though Akari and Yuna have totally different personalities, they are now good friends. Yuna gets attracted to Rio who is Akari’s stepbrother and attends the same high school. Akari becomes attracted to Kazuomi, who is Yuna’s childhood friend and attends the same high school.
Misa
A high school girl Misa moved to a countryside. She hears a mysterious beat from a distance every night.
