Kota Muroto who will be a tutor of a classmate’s brown gal, Chieri Shiina.
As a reward after studying, the two had a relationship like saffle who had sexual intercourse other than insertion.
On Christmas day, she was forced to meet her boyfriend, and she tells Kota, who was there, that she was no longer willing to study her.
Kota is angry while tearing because of the sadness of Chieri, and conveys her love.
Tachieri was hit by Kota’s feelings …?