Another world invasion, I’m busy collecting monsters and signing contracts

Xiao Heng regressed to a few days before starting college, carrying the "Otherworld Management System" cheat inside him; by subjugating and slaying otherworld creatures, he can earn system rewards to exchange for abilities or items. With this system cheat, Xiao Heng embarks on a path of counterattack—rising from a useless loser unable to awaken into an admired genius, a hidden powerhouse, and a master of alchemy and forging... Step by step, he slays monsters, makes money, and levels up, ultimately unraveling the mystery behind the overlap and collapse of this world and the otherworld...