I Have Even Read the Rulebook!

As all stories begin, Prof died. Yes, truck-Kun had something to do with that, but also a bird, a cat, and some rebar. When he was presented with with the opportunity in the Afterlife Administration Bureau to be transmigrated into a game-like fantasy world, he did something, no one ever did: he read a Rulebook. Follow Prof on his road to being rich without working, touring a whole new world without care and witnessing his realization, that despite having read the Rulebook the folks living with the System for untold millennia know more about the rules.