let's be friends

A regular boy Ryu is living a average high school life. Yukina is a cold, stubborn girl with no friends and seems to have no interest in having them. Ryu sees this and tries to befriend her, but it isn't that she doesn't want friends. It's a curse upon her. Everytime she falls in love with someone, her memory of them is completely forgotten. Yukina isn't the only one cursed. There are others each with a different curse. Ryu wants to help these students and wants to save them from their curse. The thing is that there might not be a way to save them. Ryu understanding this, still tries to help the cursed students.