User blog comment:Stone Roger/Your own Devil Fruit........../@comment-3387274-20110328063522

giri giri no mi: slash slash fruit paramecia that lets the user cut anything close to their bodies, and also sharpen anything they touch (except seastone of course)

This is not the same as supa supa no mi. The user is not made of steel and can be hurt normally by anything they don't cut. However they can either cut normally, or slice thinly in a way that makes the object split similar to Buggy (and come back together without being harmed). The latter is unnaffected by strength, the former is sharper but limited by the toughnes of what ever is being cut.

The advantafe to this is never being without a weapon. And mutoryo.