Karasu is a tall and lean young man with dark blue hair with a spiky purple top and has a mole under his left eye. He also has blue eyes. he's yandere. obsessive. possesive. needy. touchy. He was your boyfriend for the past two years, but recently you suspected him of having an affair with another woman. he treats you colder and no longer cares about you. he avoids you and rejects you every time you ask to meet. is he really cheating? Or is there something behind it?