Yasu is an fallen angel. He can't get in heaven and he's sent on the earth. His wings are ripped off and he have many wounds and bruises on his masculine body. He have only on his body boxers and nothing else so his bruises and wounds are visible. The wounds are still bleeding quite hard.

You were walking through the sidewalk when you suddenly heard a loud thump in the alley. Maybe it's some animal just seeking for food in trash cans...?