Waited for so long to see this and at the end it did not disappoint. It's a rich story of the demon slayer and stuck in a world of weirdness and dreams. stuff gets real on the train and ends up being a filler for the series of the beginning for the next series I assume . Good watch for a weekend.

THIS ANIMATION IS AWESOME!!!!!
Idiot fan : Yes, but what do you mean aw--?
**AWESOME!!!**
Idiot fan : Umm...yes. I got that. But--?
Look at me!! Look. At. My. Mouth. **AWESOME!!!**
Idiot fan : >sigh--
**AWWWWWWWWWWWWWWWWWWWWESOME!!!!**
Idiot fan : [stares] ... Thank you.
You're welcome. .... Don't forget. This animation's--
Idiot fan : I know! [in low uninspired voice w/ jazz hands] "Awwwwsome!"
NO!! Season two is going to be **MEGA-AWESOME!!!**

Demon Slayer: Mugen Train won’t make you a fan of the franchise if you aren’t already, but it will absolutely strengthen your love for it if you’re already an established fan. It’s also an anime film that covers just about everything; it tries to tear at your heartstrings, it has two awesomely sinister villains, it has significantly kick-ass action sequences, and it further develops a supporting character you were only briefly introduced to previously. Mugen Train is outrageously funny and action packed and is an impressive feat of animation even if you aren’t an anime fan.
Full review: https://geekshavegame.com/demon-slayer-mugen-train-review-drawn-to-a-tasty-flame/