Webbrushing aside his companions’ concerns, zenitsu embarks on a path marked by grief and a newfound sense of purpose that propels him forward with. Webwhile many are motivated by early tragedies, zenitsu’s true purpose emerges later, sparked by a personal loss. This newfound purpose is a powerful catalyst,. 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. Websimply put, zenitsu’s grandfather and master, jigoro kuwajima, ended his life after one of his former apprentices became a demon. Chapter 144 of the demon. Webwhat shocked zenitsu agatsuma in demon slayer season 4 episode 7? Ufotable, shueisha, koyoharu gotouge. In episode 7, titled “the stone hashira. Webas revealed in demon slayer chapter 144, titled successors, zenitsu’s letter brought him news about the sudden death of his master and former thunder hashira,. Webnear the episode's beginning, zenitsu gets a surprise message from his kasugai crow, or rather, his kasugai sparrow. Anime fans can't see what the message. Webthe letter that zenitsu agatsuma received in demon slayer season 4 episode 7 was written by chuntaro, the sparrow that accompanies him and informs him.