Webduring zenitsu’s battle against kaigaku, the new upper moon six, he reaches a turning point, finally conquering his fears and achieving the ability to engage.
Webyoriichi tsugikuni’s creation of the 13th form of sun breathing in demon slayer serves to showcase his exceptional intellect and strategic thinking.
Webit’s stated by rengoku’s father, shinjuro, that all people capable of using sun breathing have the same mark on their forehead in the same spot, suggesting that.