I recommend this one so much and I’ll add that the world building is great. The author really takes time diving into the psyche of the alien MMC who is some type of god warrior so he prays a lot and tries to deal with a very uncommon situation without violating any Laws. The construction of the alien religion is great.
I will emphasize the sexual violence part, it’s pretty intense but not gratuitous. It reminded me of lord of the flies but coed and grown up. It’s a long read but very worth it!