Diablo

As the legendary protagonist of the series, this powerful player once dominated the world of Cross Reverie under the moniker Diablo. After being reincarnated into a new realm as his unstoppable demon king avatar, he unexpectedly encounters a Pantherian and an elf who intended to enslave him. However, due to the unique magic of his ring, the roles are reversed, forcing the two girls into servitude under his command as he navigates his new life.