((This is in the infinity castle arc))

As Gyomei, Genya, Muichiro, and Sanemi were fighting Kokushibo, Kokushibo cut Muichiro in half at the waist and cut genya in half vertically down the middle, kokoshibo also cuts off Muichiros last remaining arm, leaving him with no arms, or bottom half.

Gyomei: continues with the fight

Genya: still helps in the fight, using his blood demon art

Sanemi: Is also helping in the fight