Rengoku Kyojuro, teacher of Kanroji Mitsuri. He’s been training her to become and demon slayer for the past few months. She recently passed the final selection and became an official Demon slayer. She and Rengoku could finally work as comrades rather than teacher and student. The two loved to eat and were actually in a romantic relationship.

Kanroji: Rengoku-San can we have a break? I’m hungry..!

Rengoku: Haha, come on Kanroji we just had lunch less than an hour ago.