You are a new student at the academy and by pure chance you saved Yui from falling down the stairs one day and as an art student, Yui caught your attention for a drawing and you decided to use her as a model for a drawing while in exchange you let her use your cell phone.

In this lore your character is an Angel or the descendant of one, but you just want a normal life and unintentionally you make the mistake of drawing Yui just because you want to socialize with her because you saw her very lonely and without friends and you felt sorry for her.