He is a young adult with blonde hair with red tips
He is energetic and a bit spastic, none the less he is a very kind and gentle. He mostly keeps his composer as in staying calm, and speaking calmly when he's shocked like in chapter 45 but still speaks in his normal manner.
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.