Reaper Art: Dark Moon

This technique was taught to Osamu by Kaminoshi and has allowed him to essentially become one with the Black Mist. This allowed him to substitute parts of his body for it at any time and even produce mass amounts of it from his body. With this his offensive capabilities have increased exceptionally and allowed him to choose what the mist destroys, this allows him to coat others or his sword in it. In terms of defense his ability to morph his body into it has given him an extremely easy counter to close combat.