Just a recommendation since you can use the ideas however you like. I just prefer the setting I will describe.

If I write them they will lol have the same category of MC either chaotic neutral or chaotic evil.

They won't care about others. Only one they will care about are the FMLs (No-Harem mostly) and certain friends/ family members.

They will kill and torture everything they want without remorse. No bottom-line.

Won't save others than the ones he cares about.

No simp