Webin the last episode (20) you see giyu tomioka use an eleventh breath technique. He stopped the blood threates without doing anything. So how does it work?. Webgiyu tomioka is a stoic and formidable water hashira in demon slayer, and he stands out due to his strength and resilience within the demon slayer corps. 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.