People Are in Ultra, but the Shadow King

After accidentally traveling through the Ultra world, Cheng Yuan became an artificial life form created by the Ultra killer and the lowest executor of the Dark Alliance. And his first mission is to eradicate Tiga and all the monsters in the Tiga universe. Just when Cheng Yuan felt that he was not going to die soon. He suddenly awakened to the Shadow King panel. As long as you kill monsters, you can gain experience upgrades and extract their shadows for your own use. At this point, a generation of shadow kings emerged. … "Stand up." A few years later, in the Dark Alliance headquarters that had been massacred, Cheng Yuan made countless dark powerhouses surrender with just one word.