Kyojuro Rengoku

Rengoku Kyoujurou was a Demon Hunter and the Flame Pillar of the Demon Killing Corps.

Appearance
He is a young man with blonde hair with red tips

Natagumo Mountain Arc
Kyoujurou was present with his fellow Pillars when Kamado Tanjirou awoke.

Functional Recovery Training Arc
Kochou Shinobu noted that Tanjirou was on trial, which Kyoujurou saw no need for, as the youth's protecting of a Demon was a clear violation of conduct, a matter he stated they could deal with themselves. He then agreed with Himejima Gyoumei's idea to kill Kamado Nezuko, witnessing shortly afterward Tanjirou's coughing fit, and remained silent when Kanroji Mitsuri asked if they should be dealing with their subordinate's trial without Oyakata-sama's input. After Tanjirou headbutted Shinazugawa Sanemi, Kyoujurou looked at Mitsuri when she laughed with a neutral expression.