Versatile Mage: God of Slaughter, Ruler of the Mortal Realm!

[Power Fantasy] After transmigrating into Versatile Mage, Gao Ye awakened the Space Element on his very first try and was specially admitted to Pearl Academy. Shortly after his birthday, he received a post-apocalyptic savior System! Gao Ye was in a world of magic. What was he supposed to do with a post-apocalyptic System? But soon, the System used his abilities to grant him an invincible domain space. Anyone inside his domain was powerless against him, and the domain could even expand! Before he knew it, Gao Ye had expanded its boundaries all the way to the Holy City. Within my domain, this is my territory. If you step into it, there's only one possible outcome. “You can die now!”