What about a system for a Hazbin Hotel/Helluva Boss game? I'm pretty sure that most of /tg/'s had some basic familiarity with the setting for months, but for those who aren't, I'll fill you in. Been waiting months to ask this! Note: picture related is not the actual show's art style.
Hazbin Hotel takes place in literal Hell, and follows the exploits of Charlie, tux-wearing and song-loving daughter of Lucifer and princess of Hell, as she tries to solve one of Hell's biggest issues: overpopulation. You see, there's so many assholes on Earth that Hell's running out of space for the demons that were sinful humans (though it's implied that part of it is Heaven having strict standards for entry), which isn't helped by the fact that they can't leave Hell's Pride Ring (sinners also can't have children, while natural-born demons can). So every year Heaven sends down squadrons of angels, who can kill sinners permanently, and any weapons they leave behind have the same properties (angels actually being more powerful than demons as a rule, which is part of why Lucifer is so powerful).
Charlie's plan to find an alternative method of curbing Hell's overpopulation is to create the titular hotel, believing that she can rehabilitate sinners to the ascend to Heaven, "checking out" of Hell as it were. Joining her in this endeavor are her girlfriend Vaggie, their first "client" Angel Dust, a spider demon and gay porn star, Alastor the "Radio Demon", an asexual deer demon with tremendous and unexplainable power far beyond the normal scope of sinner powers, who used the radio to broadcast his carnage to Hell, and claims to believe that redemption is impossible for sinners and that he's just there to see them try and fail for giggles, Husk, an alcoholic winged cat demon who Alastor ropes into manning the hotel bar, Nifti, a cycloptic cockroach demon with a neat streak, and more not yet introduced in the pilot but hinted at in other material, along with their enemies.