Usui Ma

"Float like a butterfly, sting like a bee. Yo' hands can't hit what yo' eyes can't see. You gonna be smokin' an' I ain't even jokin, but I'll be peckin' and a pokin' and I'll pour water on that smokin'. Now this might astound and amaze ya, but I will destroy ya with the powa' of the Jinki, feelin' me?"

- Usui's rapping when against Kamui in battle.

Usui Ma (臼井馬, Ma Usui) is one of the nine Jinki Fragments, and the only one that is known to be affiliated with Yāolù. His real name is stated to be Hanzō Senkasai (食らっ専科祭, Senkasai Hanzou), but ditched the name because, in his own words, it depicted him as "an old geezer."