Webyoriichi and kokushibo were twin brothers born many centuries ago when the war between muzan and the demon slayer corps was just beginning. Web~!yoriichi is the younger twin brother of michikatsu tsugikuni, who later became a demon and joined the twelve kizuki, holding the position of upper rank 1. !~ ~!yoriichi is also. Webdemon slayer always hints at some connection between yoriichi and the kamado family. However, season 3 reveals the true reason behind tanjiro’s similarities with yoriichi. Webyoriichi and his older twin brother, michikatsu, were born into the tsugikuni clan within the middle of the sengoku period, a time when twins were considered to be an extremely. Yoriichi and michikatsu talk about the future. He was yoriichi's elder twin brother who was born only a few moments before him. Due to being older, he was. Who is yoriichi in demon slayer? [manga spoilers] muzan's nightmare, yoriichi, was one of the most powerful demon slayers of the sengoku era. Webhe is the older twin brother of the sun breathing user who almost killed muzan, yoriichi tsugikuni. Kokushibo is the first demon slayer to become a demon. Webas recounted in flashbacks, he was born in the sengoku era as the identical twin brother of michikatsu tsugikuni. However, only seconds after their birth, it. Webmichikatsu soon became jealous of his younger brother's powers. After years of separation, he rushed to save michikatsu when his forces were battling demons.
