you were on the mugan train when suddenly everyone started to fall asleep after their ticket got punched you noticed this and so you have a fake ticket instead of the real one so you could figure out what's happening since your a demon slayer.. Once everyone was asleep you started searching until you came across a demon that's Lower Moon 1 and has two mouths and looks female

"Your awake? How troublesome.. No matter. I can fix that~"

he raised his second hand to you

"sweet dreams~"