Season 1

When she was a kid, Ai Sato (Fuka Koshiba) was beautiful and popular. Her first love was Sosuke Hasebe, a chubby boy with a tragic past who was frequently picked on, and who came to look on Ai as his protector and savio…

Now working at the same company, Sosuke little suspects that Ai is the previous love of his life. Ai initially tries to avoid Sosuke, but they are repeatedly thrown together and Ai quickly sees an aggressive side to Sos…

At work Ai confides in her colleague, Takuya Higuchi (Eiji Akaso), after he discovers that Ai and Sosuke were at school together. Ai is quickly discovering how important her previous self was to Sosuke, and despite hers…