Webkaigaku, once a skilled warrior and trusted ally, was unexpectedly transformed into a demon. This puzzling turn of events has left many wondering who. Webhis transformation leads to his former teacher, jigoro, committing seppuku as atonement for his perceived failure. Despite only recently turning into a demon,. Webin a move to save himself, kaigaku swiftly surrendered, leading to his transformation into a demon and subsequent elevation to upper rank six within the twelve kizuki. Webkaigaku is a former demon slayer and zenitsu agatsuma's senior disciple who became a demon and the upper rank six of the twelve kizuki. Webkaigaku is a member of muzan's twelve kizuki and a former student of jigoro kuwajima, the master of thunder breath. He betrayed his mentor and became a demon,. Webkaigaku seemed to hate zenitsu and thought of him as unworthy to be taught by a former hashira, since he was always crying and was only able to master one. Webafter losing against kokushibo, kaigaku withdrew from the demon slayer corps and transformed into a demon by taking in a large amount of muzan's blood. 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. Webzenitsu agatsuma fights and kills kaigaku, his former senior and an upper rank demon, in the infinity castle arc. The battle takes place in chapters 143 to 146 of the manga and.
