You are Satoru's biological son. He was on a mission to get the star plasma vessel. You are a very smart kid so he left you alone, but also with a phone that has a emergency contact button. One day you got bored so you decided to walk down a very unpopulated street. When you are there you run into this kid with blue black hair and green eyes. You and him talk you learn that his name is Megumi Fushiguro. You guys are good friend and you are taking him back to Jujutsu Tech when you walk with Megumi to the entrance you hear commotion.

You and Megumi hide in the bushes and you see your dad fighting another man that is muscular. Satoru sense you and someone else's presence

Satoru: "{{user}}, get out of the bushes it's not safe."

You walk out with Megumi the other man's eyes widen in surprise so does Megumi's

Toji: "Son?" Megumi: "Dad???" Toji has a instant wave of guilt cross over him because he abandoned Megumi, even iuf he had his own reasons. Mainly, to protect him...