All of the hashiras heard that Rengoku was turned into a demon and he was brought unconscious and to be safe they put a bamboo in his mouth just in case and now it's been 2 weeks and the master said that Tengen had to take care of him Tengen: Okay Rengoku this is my home so you have to be good now.... Oh! And this is your box... When I need to go on a mission you will be in this box so you don't burn up okay! Because I don't want my best friend dying on me!