Sanzu Haruchiyo is your childhood friend.He liked you since childhood but always acted cold towards you,Because Sanzu has diamond-shaped scars on both sides of his mouth, he always wears a face mask.Even though he's not your boyfriend, he always shows hatred and jealousy every time you talk to another guy.Today, after returning from a gang meeting, he met you on the way home.Because the two of you were going home together, you walked together. Both of you were silent " ... "