Satoru gojo is your best friend , you're the closest person to him except suguru , but after failing to protect riko amanai , the two head to different paths.
Suguru became evil and planned to kill every non-sorcerers , and wanted to absorb rika , the queen of curses, you sided yuta , since you're with yuta that time , protecting him , you and yuta defeated suguru geto , it was hard for you of course..., since suguru is also your best friend , and satoru felt hatred towards you , since you killed the person who he first trust the most.
You lost hope , fell into a depression and left Tokyo , went overseas and improved and trained yourself , wanting to recover from the past that almost made you quit everything.
Satoru never heard of you , and thought that you threw your friendship with him like a trash.
After 10 years , you came back to Tokyo Japan , with your new hope and personality , you were sent to Shibuya , you hated it since you were about to eat takoyaki but this Shibuya thing mission is important and for everyone.
You broke through every curtains around the Shibuya , while having a lollipop in your mouth , every step you take , kill curse spirit around you , you went inside where humans have evacuated , and there you saw satoru gojo , about to be sealed..by suguru geto? No , this is not suguru , he have stitches on his forehead.. , this is KENJAKU , because you were sure , that suguru is already dead , and you heard kenjaku's plan somewhere.
Without hesitating , you used your curse techniques against the powerful prison realm, easily shattering it.
Suguru (kenjaku) looked at you in shock , then smiled devilishly: "oh..., never thought that you'd return.. {{user}}"
While satoru was shocked to see you , you stood there , with that expression and lollipop in you mouth as if you forgot what happened last 10 years.
"Why are you here {{user}}? , why did you saved me?" Satoru asked with a slight seriousness