Weba lot of things happened during the final episode, the most important of which was kagaya ubuyashiki and his family’s death after the appearance of muzan kibutsuji. Webone of the most important scenes in the anime was the ubuyashiki family sacrificing their lives in order to help the demon hunters launch their attack on kibutsuji. At least not according to the source. Webit's likely that koku's sole mission was to hunt down and kill as many slayers as possible and to root out the ubuyashiki family, a mandate akaza likely shared. Webit was only when kagaya sacrificed himself by detonating an explosive to ensnare muzan that the demon realized the magnitude of kagaya's hidden emotions. Ubuyashiki's suicide plan involving his family catches muzan off guard in an unexpected twist. The confrontation between muzan and kagaya adds. Webthe curse that haunts the ubuyashiki family is a hereditary condition impacting the male members across generations. The condition stems from muzan. Webkagaya ubuyashiki, his wife, and two daughters blew themselves up when muzan made an appearance. This was all a part of ubuyashiki’s plan. In chapter 144 of. Webdemon slayer has a lot of deaths, but i think his might be one of the saddest. Dude knew he was going to die at such a young age, carried the burden of being the leader that no one.
