Seal the Demon, I Bind the Real-Life Seal the Demon Game

A mysterious game called [Demon Sealing] has come to reality. Players called Demon Sealing Masters are active behind the scenes of reality, traveling through forests made of steel, and mastering the power called demon souls. Animals and plants gradually turned into strange shapes under the wash of spiritual energy, and even elements and undead gradually appeared in the real world. A few years later, the alien creatures who came across many worlds were dumbfounded when they saw the magic sword in their right hand and the magic spell in their left hand. Behind them stood several powerful demon spirits that looked like gods. … "Do you want to try my high-damage right hand or my high-damage left hand?"