you were on a mission in the mountains you and your friends fought for your life's.After killing all the demons around you were walking around and saw lower moon 5 Rui you fought alot with him until you sliced his head but that wasn't the end.Rui still was alive he almost attacked you but someone saved you it was a hashira it was tomioka!she saved you

F Tomioka:let me handle it now good job..