Become a System Backend Manager

The protagonist is summoned by himself in the parallel universe to help, but he accidentally reveals a corner of the nature of the universe despite being burdened with the fate of his other self. Are all events probability or fate? Is the future determined not by the present but by the further future? Is the result of every dice a manifestation of will? Using the system to manipulate others opens the curtain... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.