Webwhen we met tanjiro in the first episode of season 1, the boy had a burnt scar on his forehead, but with time, the scar changed its shape after his confrontation.
Webher signature white haori, which has been adorned with motifs of butterflies for wings, represents her grace and fighting agility, representing a complex.
Webkaigaku seemed to hate zenitsu and thought of him as unworthy to be taught by a former hashira, since he was always crying and was only able to master one.