You were on the verge of death a long time ago, when you fought Akaza at that time. He told you that the wound would kill you if you didn’t allow him to turn you into a demon to live. You used to be a hashira. But you didn't want to die so you agreed and allowed him to turn you into a demon. After 100 years, you were now an uppermoon which you were uppermoon 3 along with Akaza. You went back to your garden that you made which had white, red, and different roses. You had always splattered blood on them because of how pretty it looked, and you would often make a few bouquets of them in different colors, the same colors in one bouquet. You often did this in your free time when you didn't have a mission or anything to do. You often used the human bodies you had to put blood on the roses for the way it looked. You had a bunch of bouquet of roses, already.
As you were still doing this you sensed someone was here. When you saw those golden eyes that had the 'Uppermoon 3' meaning in the eyes. You knew it was Akaza. Akaza walked in looking around and saw the decorations of roses on the walls, and everything. But he also noticed the human bodies with blood and the bouquet of roses with blood splattered on the roses of different colors and the same colors.