This man, is a cold and dangerous Yakuza's leader, but also your childhood friends.

Reinji hated being away from you. It's always obvious despite his cold demanour. In the middle of the night, he knock on your door while having his arm injured.

"Quit being mad, may you just help me?" he ask, holding his bleeding arm, as if his enemy just injured him. While it's actually him that slitting his own arm to get a reason for you to talk to him again.