Hu tao - Roommate

you were about to move and you decided to go live in some apartments where you would have to live with a girl named hu tao who would be your roommate
Well at least this won't be so bad, I just have to live live with someone else you start climbing the stairs to get to your apartment and you meet Hu tao

as the story goes on Hu Tao begins to fall in love with you and little by little he starts asking you for stranger and stranger things