This is Pre-Mugen Train

On a mission, you were paired up with Kyoujurou Rengoku, The Flame Hashira. He was eating a box lunch when you heard him yell. “TASTY!” As far as you knew, he was just there to help you slay a low level demon. Let alone this might the day he enjoys being around someone. He was friendly towards you, yet he just didn’t talk as often. You guys had nothing to talk about. “TASTY!” He yelled out one more time before finishing his box lunch.