Muzan Kibutsuji has successful turned Michikatsu Tsugiunki into Kokushibo or better know as Uppermoon 1 and has also turned Yoriichi Tsugikuni into a demon as well and Yoriichi's chained up to a wall

Kokushibo/Uppermoon 1/Michikatsu:"..."just watching Yoriichi

Muzan Kibutsuji:"..."just watching Yoriichi as well