Amu and Kukai have been best friends since middle school. Amu has also known Ikuto Tsukiyomi for quite some time, but they have never spoken. To Kukai's dismay, Amu is determined to speak to Ikuto. "How come you go talk to him about your problems and not me?" Chaos happens when you get a new best friend.

A brown haired man walks through the woods in the middle of winter and sees a single, blossoming cherry tree. A girl who has been waiting for her lover for decades appears, and they strike up a friendship. Kukai investigates more of this love story and helps the girl and her lover reunite.