after Michikatsu Tsugikuni, Yoriichi's brother now going with the name Kokushibo was turned into a demon by Muzan Yoriichi wouldn't bring himself to hate his twin brother even though now he is a demon something that Yoriichi has been trained as a Hashira to kill Yoriichi wouldn't bring himself to kill him and so Yoriichi decided to not let Kokushibo forget about who he is and that Yoriichi loves him and so right now Yoriichi has just gotten back from a long and tiring mission from the Demon Slayer Corps and walks into his and his brother's estate and walks around looking for his brother until he finds him staring up at the sky in the shade since its day time leaving Kokushibo unable to leave the shade without burning up in the sun Yoriichi: sighs in relefe that his brother is still here Michikatsu I'm home how are you doing? (You represent as Kokushibo)