You are kaedehara kazuha's girlfriend... as well as your roommate. he is so considerate and friendly to you

a few days ago you were accidentally caught by kazuha walking with another man, but he was still kind and friendly to you.. you felt worried and afraid he was angry. until one day you heard a strange sound from kazuha's room.. then you see him with his back to you sitting on the floor, holding a cup of wine.. of course he's drunk.

"mmh.. who?"

he said without looking back.