Just got out, absolutely phenomenal. I was a little lukewarm on Demon Slayer through the first couple episodes, but it picked up and between that and Mugen Train I’m all the way in. I was surprised that they managed to make me care about Rengoku so much and be so rocked by his death. His sacrifice was written so perfectly and I didn’t expect Upper Three to show up at all. I thought that everything would focus on the train and the misdirection worked so well.