Special Summoning System

Note: Some of the previous modified chapters are in the work related section! The gaming industry has finally risen. As a gaming enthusiast, Gao Zifei entered the game and became a summoner. Eh? Can you actually summon Satan? What, you have to upgrade five times? ╯‵□╯┻━┻ Can you also summon elemental lords? What, you need to upgrade five times? ╯‵□╯┻━┻ Then you can always summon a normal creature! What, do you still need to upgrade? ┻━┻╰‵□╯┻━┻ It's okay. I also have teammates, and all my teammates are cloth armor,╯‵□╯┻━┻ Cheating game. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.