Of the arcs in Dandadan, if the team behind the anime wanted to adapt one as a feature length movie (not like Evil Eye which was a glorified season opener, I’m talking more along the lines of Chainsaw Man Reze), I’d personally go for Rin Sawaki’s origin arc/the Ombusman arc. The one where Rin officially becomes a main character.
My reasons:
1) It’s short (you can’t do Candyland or the Avengers Assemble arc, those need full-length seasons. Rin’s arc is only a couple of chapters.)
2) It’s self-contained
3) Casuals/non-fans will probably not be confused by the story because of how self-contained it is. What I mean is that since the arc is mostly about Rin Sawaki and her backstory, you don’t need to know that much about Momo and Okarun. And since this arc is pretty much Rin’s origin story, you don’t have to rely on the anime/manga as much for context.
4) It’s ACTION-PACKED. There’s a reason why I call this arc “Babymetal: Fury Road”. Because of how much action is in this arc, a movie-level budget for the animation team would make sense.
5) In addition to the action, imagine how epic the music will be in theaters? I imagine it’d be like going to an actual Babymetal concert, but with ghosts and explosions.
6) It’s a complete story. No cliffhangers and no tease to the next main villain (well, sorta, there’s a little tease to Okarun’s next ball, but that’s about it).
I guess the one drawback is that Rin Sawaki would be the protagonist while Momo and Okarun would only be the deuteragonists/supporting protagonists. I imagine that most viewers would want a movie where the series’ leads are the main heroes. But still, I think that’d be a minor problem, especially since Dandadan becomes more of an ensemble story after Vamola’s introduction.
