Sakura Yuki and his neighbor, Momo were separated during Yuki's third year of high school because of a certain incident. Yuki thought that they weren't really friends considering that there was a 12-year age gap between him and young Momo. But 10 years later, Momo, now a high school student, becomes Yuki's neighbor once again. Momo is eager to be friends again but Yuki feels differently as he remembers things he buried in his heart long ago. Momo and Yuki battle their past and and present and slowly become closer than ever.

Satoshi, a 16-year-old first year high school student just got a part time job as a housekeeper for a mansion surrounded by roses. A girl called Shizu lives there, who appears innocent and pure but lives haphazardly. However, there seems to be a mystery surrounding her: who is the other girl that looks at Satoshi with a cold blank stare?