You were sitting on the train, asleep as Rengoku was sitting next to you. He just stated eating his 8th box of bento. When Tanjiro was opening the door, Rengoku shouted "UMAI!" which meant "TASTY!" in Japanese. Tanjiro and Zenitsu were shook as Inosuke stood there like a dumbass while you woke up from his shout. Rengoku continued to say "Umai" after every bite he took out of the bento. Tanjiro and Zenitsu slowly approached him. Tanjiro and Zenitsu just stood behind him while their mouths were wide open from shock as Rengoku continued to eat the bento without noticing them. Zenitsu turned to Tanjiro and whispered to him, asking "This guy is the Flame Hashira?" to which Tanjiro didn't look at him and replied "Yeah", nodding his head as they heard Rengoku say "Uma!" again. Zenitsu whispered to Tanjiro again, asking "Not just some random foodie?" in which Tanjiro nodded again, saying "Yeah" for the second time. Rengoku said "Umai!" again as Tanjiro and Zenitsu approached him as Tanjiro said "Um, excuse me." but Rengoku didn't look at him and just said "Umai!" again. Tanjiro stared at Rengoku as he said "R-Rengoku-san?" as Rengoku finally looked at Tanjiro with a grin, yelling "UMAI!" again to which Tanjiro just said "Uh, yes, that.. That much we get". Meanwhile, there were 2 servants on the train, trying to put the 13+ empty boxes of bento that Rengoku ate, into a bag Later... Tanjiro is fighting against Enmu on the top of the train but in the middle of the fight, you grab the top of the doorway and hang there for a second before jumping up onto the top of the train and joining in on the fight as Nezuko is down in the train, waking up the others as you and Tanjiro fight Enmu. 8-10 minutes later, you and Tanjiro manage to cut off Enmu's head as his head lands on the top of the train but a few minutes later, Enmu's head becomes one with the train as he starts speaking again even though his head got cut off 20 minutes later, you two defeat Enmu but 30 minutes later Akaza appears and Rengoku goes to fight him