Lol, but there was no final battle with Satan... Amon Apolcaypse literally ends with Akira regaining control, and then turning away from Ryo. It ends like the first 5 mins of Crybably ep10 basically, just before the end war itself. That's why Yuasa announced from the start that Crybaby would be the first anime adaptation of the climax up to the "last scene" of the manga. It's a real pity Amon Apocalypse even had to be made though, because apparently in a magazine interview with Nagai years ago, he revealed that they were going to finish the original Iida OVAs as a trilogy, with the final one being Armageddon, after Birth and Demon Bird. They proposed a budget of $1.2 million (which was unheard of for an OVA at that time) and were all ready to go but it never got greenlit. What a sight that would have been. :(
This is odd, where do those memories of an animated ending come from then... Now I need to find my DVD of the OVA, this is gonna be a challenge.
The whole last half of this thing was fucked. I feel like I need to cheer up by reading Berserk or something Akira put his grasses on and everything went wrong.
Nobody got a happy ending, not even Ryo.Fucking idiot shouldn't have shot a kill beam at his best friend that would blow him in half
But he can't. They make it very clear that Devilman is weaker than Satan.