Webgiyu tomioka holds the position of water hashir during tanjiro’s time as a demon slayer, though he has always wanted to relinquish the title. He is a man of few. Webthe eleventh form is an original technique created by tomioka, also referred to as dead calm. While there are ten known and established forms to water breathing,. Webunfortunately, giyuu does not regrow his arm in the series. Losing his arm becomes a permanent physical reminder of the sacrifices and challenges he has faced. Webgiyu tomioka is the water hashira in the demon slayer corps. As one of the very best slayers.