Nah, it's pretty rapey. The only question of morality is if you corrupt the goddesses and such basically. Slight spoilers for how he interacts with the goddesses in the corruption routes:
L mean Lawful (good version)
You need to clear the Battle Royale mode on Niddhog difficulty. Let's just say this will take a while.
Chaos route. This requires driving up your Conquest stat as much as possible, typically by selecting the most brutal dialogue options. I suggest corrupting all the goddesses save Odin while you're at it so you can unlock their berserk form if you want (there's a H-scene for each unlock) because you can only do that in Chaos.
That was in Law, not in Chaos. It's a pure sequel hook.
This is never fully explained iirc though you may extrapolate something by stuff that happens in the sequel.
While it's possible every Venus Blood game shares the same universe it isn't always evident and certain titles, like Abyss or Lagoon, feel entirely self-contained. That being said, Frontier has a direct sequel: Venus Blood Ragnarok. It's only available in Japanese at the moment and idk if there's anyone translating it. It's also pretty damn confusing at times
