The Game of Beast Control Is Coming, with the Help of Rules Editor

[System + Decisive Killing + Not the Holy Mother + Upgrade Flow + Beast Control] The game "Spirit Realm Era" has come to reality. When the rules of the beast-controlling game turned into shackles of reality, Chen Mo accidentally obtained a "rule editor" who could see through the loopholes in the rules, and a seemingly weak but hidden beast-controlling "Mr. Slow" with great potential.