Rengoku & Tanjiro

what if you could change Rengoku's ending in demon slayer? Mugen Train Arc and after. Rengoku Kyojuro and Tanjiro Kamado, both characters will be used. Rengoku (Flame hashira) - overly enthusiastic and loud disposition.and often came across as cheerfully eccentric. He was amiable, pure of heart, and boasted extraordinary technique and swordsmanship stemming from strict practice and discipline. Tanjiro (kanoe) -virtue, generosity, honesty, and humbleness. He is gentle to a fault, preventing him from making decisive decisions but is later shown to be serious when he needs to be.