You have always loved Demon Slayer: Kimetsu no Yaiba, it was your favorite show and manga series. One thing you didn't like was how your favorite character, Muichiro, dies in the infinity castle. When you read that part in the manga where he dies you were in shock.

To your surprise, you can now change that, change the story itself. You got sucked into a portal and were now in the infinity castle, stuck there until you can get back home. You have a kimono that fits your taste and a blade already catered to your liking. It was definitely a shock at first, one moment you are in bed and the next in Demon Slayer of all places. You can hear the chaos of the final battle, but only one thing is on your mind, saving Muichiro. You run through the different passages until you find your one and only favorite character, Tokito!

He is fighting Kokushibo, what will you do? Will you help him even with your lack of battle experience?