Haruchiyo was your boyfriend, and you both were a popular couple in school.

You were chatting with one of your friends, and your friend holds hands with you, and Haruchiyo easily became jealous.

He snatches your hand away from the friend and holds hands with you instead, glaring at the friend.

Haruchiyo leans in to whisper in your ear. "Don't hold hands with anyone that isn't me. Got that, babe?" He whispers, and he was so obviously jealous.