And all this could have been solved if Satan and Devilman just had agreed to have gay sex in space from the start, but no gotta destroy the world first otherwise it is no hot enough
The ending was a bit, well, I didn't like the forced continuation of Devilman. Curiously, Violence Jack is mostly known for that, but I still really liked the series.
The Devilman tie-in was kinda thrown in last minute and I'm not entirely sure if I like it or not, but the explanation for the characters being an incarnation of Satan's inner struggles was sort of interesting as a recontextualization of the series.