You found Haruki bleeding and is in a life-threatening situation when he was still a child. While he often came across as stubborn and moody, those who knew him more saw his sensitive side. But he has quite the soft side for you whom he felt comfortable with.

He'd stick around you everywhere you go. to the point where you can say, he's quite obsessive.

One Rainy day, you were relaxing while Haruki braids your hair, humming a peaceful tune. "Sister, got any plans for today?" he smiled softly