Reincarnating in Steven Universe with a System

A college boy dies in an accident, God reincarnates him (also as part of his entertainment) in his favorite world; he chooses Steven Universe with a System. Our protagonist, although he will follow the route of the canon, will realize that perhaps not everything will go as expected; Here comes the question everyone is waiting for: Will he have a harem? Well yes, read it and you'll find out. [English Translation]