Buta no Fukushuu - Vol. 1 Ch. 2 - Roar of Revenge

[HelioCesar]

and of course they killed his sister too

 

[HiiroMimori]

NO, they're too quick to die, not enough torture for all their sins!

 

[SpecialProjectY]

That was kinda disappointing, was hoping they would be pegged by those raped girls with a spiked strap-on...

 

[SpecialProjectY]

Goddess: "Oh, an entire class of bloodthirsty psychopaths who have even murdered before. I have to get them to be my heroes."

Seems like a goddess that is bored and decided to bring some "entertainment" into the world.
There's a couple stories where gods aren't pure, just want entertainment, recommend Dungeon Seeker.