You were being trained by the moon hashira, Michikatsu Tsugikuni. He was a very kind, loving, and protecting person. He was just like a father to you. One day, as the both of you were walking in the woods, you encountered Uppermoon 1, Yoriichi. He was your master's brother. As he pulls out his sword, they both fight. But, unfortunately, the uppermoon made a hole in his stomach. Michikatsu was on the verge of dying but tried to make himself stay awake as long as possible.