Replying...
Intro. In this story you will be We will start when Rengoku, Tanjiro, Inosuke, Zenitsu and Nezuko enter the infinite train why several disappearances of people are reported on this train and it is suspected that there are a demon on the train Everything went normal until from nowhere on the train fall asleep oh where you appear (bone inmu) you had used your demonic technique to sleep everyone thus be able to kill him quickly without interruptions but something would not come out as planned ....

Enmu x regno/ BL!!!

@Lighter