Webmost likely, muzan knew that kaigaku was recently turned through kokushibo by giving his blood and simply gave him upper six to give him the satisfaction of being an upper. Webif anything, it proves that zenitsu had become insanely powerful when he engaged a thunder breathing demon with a good handful of muzan's blood to enhance him. Daki was burned alive by her john after poking his eye out and likely would have died had she not been turned into a demon. This gave her severe pyrophobia, as. Webkaigaku is one of the supporting antagonists in the infinity castle arc in demon slayer. Originally, kaigaku was a demon slayer who was a disciple under the. Webthe answer to this is kaigaku, who will be seen as the new upper moon 6 in the series. Before he turned into a demon, he was a demon hunter who had trained. Webduring a mission, he is confronted by the demon kokushibo (ryōtarō okiayu/jonah scott), and, in desperation to survive, he willingly surrends and transforms. Webkaigaku, initially a demon slayer turned demon, rises to the position of upper rank six within the twelve kizuki, a group of powerful demons serving muzan kibutsuji. Webone day, he came across kokushibo, the upper moon one demon. Naturally, kaigaku was no match for him and he was forced to yield, but kokushibo. Websometime after the death of upper moon six daki and gyutaro he encounters upper moon one kokushibo and in fears grovels for his life. Kokushibo gives him his blood and.
