I'M A SAINT BUT I'VE HAD ENOUGH WITH HUMANS SO I DECIDED TO TEAM UP WITH THE DEMON QUEEN TO DESTROY THE HUMAN WORLD

I'm a Saint but I've Had Enough With Humans So I Decided to Team up with the Demon Queen to Destroy The Human World summary:

Maya, who inherited the position as the Saintess, was angry at the human world. The first Saintess had saved the world from the demons by Holy Magic, but now the humans oppressed demons just like demons did before they were saved. Maya declares: "I'm crashing human world!" She visits the Demon Queen to team up with her, but although she possesses the greatest power of all demons, she was a coward girl. She tries to change Maya's mind, but Maya is very determined... Can the fearless Saintess and the sweet Demon Queen be good buddy and destroy the human world!? A unique story of Saintess and Demon Queen you've never seen before!