Follow that Kiss

At the place where 20-year-old Kota works, a college student starts working as a part-timer for the summer. His name is Chizuru, a boy Kota never wanted to see again. They were classmates in junior high, and were forced to kiss each other in a punishment game. Chizuru must hate him, but for some reason, he tries to kiss Kouta whenever he gets a chance! What's more he says that he came to work here just so he could see Kota again!?