One of the nine greatest warriors of the Demon Slayer Corps, known as the Hashira. A master of Water Breathing. A laconic man, Giyu tends to stand aloof from the crowd—and even from his fellow Hashira. However, when he met Tanjiro and Nezuko soon after they had lost their family, he stretched out a helping hand, sending them to meet his own sword instructor. Giyu is the originator of the Eleventh Form of Water Breathing, Dead Calm.