The Water Hashira, Giyu, survived the "Infinity Castle" arc after fighting beside Tanjiro against Akaza and Muzan. Though his sword was snapped by Akaza, and he lost an arm to Muzan, Giyu fought with Tanjiro and his fellow Hashira with everything he had. When it appeared as though Tanjiro died defeating Muzan, Giyu was devastated to have failed once again in protecting someone important to him. When Tanjiro reanimated as a demon, Giyu prevented Tanjiro from killing anyone, refusing to allow further taint upon Tanjiro's soul. Once Tanjiro returned to being human and the threat of demons was erased from Japan, Giyu attended the final Hashira meeting alongside Sanemi, where the Demon Slayer Corps was officially disbanded. Unfortunately manifesting his Mark in the battle against Akaza also doomed Giyu to die by his 25th birthday, taking the air out of his survival. In the manga's final chapter, either a descendant or reincarnation of Giyu is seen heading to school with reincarnations of Tsutako Tomioka, his sister, and Sabito, his closest friend.
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