Kyojuro Rengoku

 Kyojuro Rengoku (煉獄 杏寿郎, Rengoku Kyōjurō) is a major protagonist in the 2016-2020 fantasy horror manga series Demon Slayer: Kimetsu no Yaiba and its 2019 anime television series adaption. He is the deuteragonist of the 2020 anime movie Demon Slayer: Kimetsu no Yaiba: The Movie - Mugen Train which adapted the Demon Train arc of the manga.

Kyojuro was one of the nine Hashira, a group of the nine greatest Demon Slayers in the Demon Slayer Corps. Specifically, Kyojuro was the Flame Hashira who made use of the Flame Breathing. While not having his life being directly affected by Demons like many other members in the Corps, Kyojuro household had produced Demon hunters for generations. Kyojuro, with his sense of duty instilled by his ailing mother since childhood, saw it as a duty to protect the innocent from Demons and entered the corps to serve humanity. During a mission, Kyojuro was killed in battle against Akaza, the demon who held the position of Upper Rank Three within the Twelve Kizuki.

He was voiced by Satoshi Hino and Mariya Ise as a child in the Japanese version of the anime, and by Mark Whitten in the English dub of the anime.