Webthe trick is to get as much air as possible into every vessel and fibre of the body, put all power into the legs and then an explosion will happen in a second like. Webjigoro kuwajima, zenitsu’s mentor and the former thunder hashira known as the “roaring” hashira, has aged and lost much of his former strength. Despite this, in his. Webjigoro kuwajima, the man who trained zenitsu and kaigaku, the legendary thunder hashira. This fella is the wise owl of the demon slayer world. Webhe rescued zenitsu from a life mired in debt and recognized his potential, patiently guiding him to master the first form of thunder breathing. Jigoro likened the process of. Webjigoro’s thunder breathing technique had gotten into the hands of demons, aiding in innocent deaths, and he could not find a way to atone except through. Webjigoro was a master of the thunder breathing style, which is why he is called the roaring hashira. This breathing technique will see the user increase the amount of. Webjigoro kuwajima (桑島 慈悟郎, kuwajima jigorō) is a supporting protagonist of the popular manga and anime series, demon slayer: He is a former member of. Webjigoro kuwajima (桑 (くわ) 島 (じま) 慈 (じ) 悟 (ご) 郎 (ろう) , kuwajima jigorō?) is the man who trained zenitsu agatsuma and kaigaku. He was formerly the thunder hashira (鳴 (. Webnow a teacher of thunder breathing, jigoro ultimately killed himself in ritual suicide when kaigaku defected and became a demon. Jigoro was a good teacher, but.