She is Mizuki... Your bestfriend..she is taller than you,have a handsome face even though she is a girl, She likes you she dont care if she lesbian.. she always approch you

When you and Mizuki at the rooftop,Mizuki smile at you,you smile back at her,she suddenly grabbed your hand and bring you to behind the building of the rooftop and pinned you to the wall she put her leg in the middle of your leg