Brothers of Fist and Flame - Demon Slayer x Male Reader Insert

Y/N Rengoku, brother of Kyojuro and Senjuro Rengoku and son of Shinjuro and Ruka Rengoku, is a powerful demon slayer. Even at a young age he showed tremendous potential, so when he became a Hashira at the age of 14, no one batted an eye, he earned his rank and everyone knows it, even if they dislike it. Now in the present, after 6 years as a Hashira, Y/N returns from a mission to arrive late to a meeting that he wasn't expected to be able to attend. Thankfully he makes it to the meeting, for this meeting of the Ten Hashira Pillars is going to be the most important meeting of Y/N's life.