The Demon Lord Summoned as a Hero Seems to Be Conquered by the Crown Prince ~ the World I Was Called to Is an Unbelievable Polygamous Fantasy World ~

I am the Demon Lord. I exist to be defeated by heroes, to maintain the world’s order. However, I’ve grown tired of the predictable outcomes of these confrontations, so I asked the Goddess for “something stimulating.” As I was about to finally confront the hero summoned by the Goddess, a magic circle for inter-world summoning activated unexpectedly, and the next thing I knew, I was in an unfamiliar room. Where is this? Where has my hero gone? As I panicked, a dazzlingly bright Crown Prince appeared before me, grasped my hand, and pleaded, “Please, please… use your power as a hero to save this world from the Demon Lord.” Me, a hero? Me, to defeat the Demon Lord? No, no, no. I am the Demon Lo...