Global Ghosts Warden: I have 100 million Contracted Ghosts

Lin Mo, who plays games during class, has crossed over to a parallel world infested with ghosts and monsters. As the one with the worst talent, he unexpectedly gains the Breakthrough System. All he needs to do is break a ghosts defense to forcefully contract it. Now, things have taken an incredible turn. While others typically contract two ghosts on average, Lin Mo has contracted billions. With a single summon, a myriad of ghosts descends! Drowning ghosts, starving ghosts, alcoholic ghosts, chainsaw ghosts