Webzenitsu's letter reveals that his master and grandfather, jigoro kuwajima, committed suicide after his apprentice, kaigaku, became a demon. Webwhile it has yet to be revealed in the anime, chapter 144 of the demon slayer manga reveals that the letter contained the tragic fate of zenitsu’s master and. Webin this letter is a notice that zenitsu’s instructor, jigoro kuwajima, has killed himself through seppuku to atone for the acts of one of his students. Webjigoro is a retired demon slayer and the former thunder hashira who mentored zenitsu agatsuma and kaigaku. He was zenitsu's adoptive grandfather and a master. He is a cowardly but brave and loyal ally of tanjiro kamado, the protagonist of demon. Webzenitsu received a letter that made him serious and brave in episode 7 of season 4. The letter revealed the tragic fate of his master, jigoro kuwajima, who died. Weblearn about jigoro kuwajima, a respected demon slayer trainer and the former thunder hashira who mentored zenitsu agatsuma. Discover his personality, background,. Webjigoro kuwajima was a former hashira who taught thunder breathing to zenitsu agatsuma, who called him grandpa. He died by seppuku after his student. See how he changed from a.
