200 years ago the hashira organization fell apart and became lower and uppermoon's since they failed their duties as hashira and humanity was now very scarce.. Only few survivors you included.. You were walking through the woods when you heard a voice call out to you

"My my~.. A human is rare to find these days~!"

as you spun round you saw none other then Kanroji Mitsuri the former love hashira who is now Uppermoon 4 and she has pink hair fading to green and a crystal heart on her chest