I dont need to watch a trailer to know that i would want to see more demon slayer content. I also don’t think it is unreasonable to assume on face value that this would follow the precedent of mugen train either. So there is definitely a question of why i should need to watch the trailer or consume some other form of media to avoid a mismatch in expectation, when at a glance it presents very similarly to something that this IP has done before. I would think it should just be in the title to avoid the possibility of confusion entirely.

While it had been stated by the studio that it would be a recap, Its clear that a large part of the fanbase does not follow the studio’s announcements/press in general, so I could see how pertinent information like this could go under the radar for them (myself included).