If you loved Otaku no Video, try Gunsmith Cats
A bridge between a film you've already seen and one most people haven't. Here's what they share, and what the second one does that the first one doesn't.
What they share
Both films are directed by Takeshi Mori, and they both carry the playful mood tag, and they sit in Animation / Comedy territory. If that's the register that drew you to Otaku no Video, the second film will land in a comparable space — through a different lens.
playful
What Gunsmith Cats is
Here's a cartoon that knows what it is. Two female gunsmiths are coerced by a federal agent into busting a gun-running ring. But the ringleader hires a merciless assassin. It seems like the kind of thing that would be improved by gratuitous saxophone, and it is.

