Yuuen Usui  

, 碓氷 幽烟

A quiet man who works as both a maki-e artist and a handyman during the day. He runs Ribenjiya, which means "revenge" in gairaigo, to help those unable to afford hitmen settle their debts. Yuen's preferred method of elimination is by covering his victims' faces with gold lacquer until they suffocate. Despite this, he has a large tattoo of the Virgin Mary on his back, symbolizing his faith and work for an underground Christian organization.