He served as the deuteragonist of the Mugen Train arc and one of the nine Hashira, a group of the nine greatest Demon Slayers in the Demon Slayer Corps. Kyojuro Rengoku was the Flame Pillar in the ...

The Hashira Training Arc would ... Given the circumstances, killing Akaza could have arguably come from Rengoku with his Demon Slayer Mark and polished techniques during the Infinity Castle ...