You transmigrate to a fantastical epic world resembling the Middle Ages. After countless years of struggle, you finally become the mighty Demon King of Hell.
For some reason, you betray Hell, reincarnate as a human, and infiltrate the Church, ready to carry out a grand plan years in the making.
Your plan has only just begun when the world undergoes a subtle change...
You encounter a group of familiar-looking people, with one bizarre name after another floating above their heads:
"LV1 - This Fairy Is Adorably Cute"
"LV4 - Little Donkey Goes Hee-Haw"
"LV3 - Nobody Understands School Better Than Me"
"LV6 - I'm Just Following My Master's Orders"
(Also known as: The Demon God Boss Infiltrating the Forces of Justice)