Wakaba Himekawa is aware that she is growing up more slowly than other people, but otherwise lives a peaceful life. On the same day that she finally gets her first period, her childhood friend Takaya confe...

The twin brothers Susumu and Tsutomu have been friends with the girl Sakura since they were kids. But when Tsutomu mysteriously disappears at the age of ten, Susumu and Sakura begin to drift apart. What Saku...