Me Who Has Obtained the World of Dio's Stand-In

I am a social creature with no future in life. After obtaining a substitute named The World, I traveled back to my student days. During this period, I used my superpowers to rectify the atmosphere on campus and prepare to face life again, but new troubles followed one after another. I need to travel to various periods in the Jojo world and defeat the corresponding opponents before I can save the world with my substitute strength. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.