Rashguard design I made for Raven Fightwear, an australian owned fightwear. They provide awesome stuff for mma, bjj, jiu-jitsu and other martial arts activity. And this design leads to the expression "oni with an iron club" (鬼に金棒 oni-ni-kanabō?), that is, to be invincible or undefeatable. It can also be used in the sense of "strong beyond strong", or having one's natural quality enhanced or supplemented by the use of some tool.
