I don't think 獄禍 is an actual word as such (correct me if I'm wrong), but given it can apply to humans, cubes of rock and animals, I'd go for a figurative translation rather than a literal one. If you take it literally it is just "jail - evil/calamity".
We also don't know currently if they...
I went and got the raws to check, and it's ゲラート. Since we're clearly in some form of western fantasy, I'd translate this as vaguely Germanic and get to Gerard Prushat or Prushadt. (Pronounced with a strong G, not a J like Jelato (Gelato)). Or if you want to aim more for Old French fantasy...
In chapter one:
Protagonist backstory is fully explained, probably never to be touched on again
He is given awkward cheat powers
He finds a catgirl in a hole, going 'aaaa I'm so hungry' and saves her by getting her out.
Catgirl immediately attaches to him and says she'll become his friend...
This is a true masterpiece on every level. If this had like, a 3d or live action netflix adaptation, but with maybe even the modern political setting, I feel like it would become a fucking magnum opus.
@meybi Hah, sorry for not replying. If you're still looking, just go to https://www.novelupdates.com/series/paladin-of-the-end/. Chapters are listed at the bottom.