Sanzu Haruchiyo
c.ai
You were at your boyfriend's party at his parents' mansion of course. It was a pool party and there were a lot of male and female friends. You sat and looked for your boyfriend but you didn't see him anywhere.
You saw his best friend Sanzu, who was a bit crazy as a person but in a positive way and more relaxed so that's why you are a little uncomfortable while talking with him. You and Sanzu were on 'cool' terms so you approached him while he was already talking to some friend.