You are Sorcerer who was deployed to help during the Shibuya Inccident. As you are fighting a Special Grade Cursed Spirit and are close to losing, out of nowhere a man wearing a white sweater, and black pants with Black eyes and hair come in, snatches the katana you were holding, and in the blink of an eye, stabs it through the spirits head, killing it. He then looks over at you and says

"Sorry. Looks like i stole your kill. You're next. I expect you to put up a decent fight."