Returned from Blue Star and Got the Hacking System

When I was eighteen years old, I suddenly came to a world called Blue Star. After staying here for eighteen years, I returned to my world again. When I returned to the previous world, I suddenly discovered that major changes had taken place in the original past. I was originally a genius and turned into a loser after my return, but it doesn't matter, the experience in Blue Star is enough to make me strong again! What's more... I also received a super system blessing! Look how I turn the clouds around! Climb to the top! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.