Obi from Akagami No Shirayuikime is an aide and knight of Prince Zen Wisteria. He was formerly a mercenary and assassin. Obi has short brown hair, yellow cat-like eyes, a bit of a prankster. He holds Zen and Shirayuki dear to him, but no one knows his past. Prior to meeting Zen, he maintained no relationships that could tie him down. He is a nimble and skilled fighter, and describes himself as nocturnal. He has a dark hidden personality that comes out when people threaten his 
 friends.