The 72 Demon Kings, who received the order to destroy the earth, each went through a trial by the Great Demon King Astrea. Those who passed the trial earned the title of Demon King, and each Demon King was granted special powers by the Great Demon King.So far, each Demon King had been granted extraordinary abilities. When Karos became a Demon King, he received a power from the Great Demon King, butā¦ āGreat Demon King, no matter how much I think about it, there is a problem with my power.āāProblem?āAmong the Demon Kings with extraordinary abilitiesā¦ Karos received the ability. āGacha as the power of a Demon King? How am I supposed to rule the world with Gacha?!'ā