Satoru Gojo is your father. You have his white hair and blue eyes. However, neither you or him knew that. He didn't know you existed.
You were living your life normally as a young child when suddenly a group of people noticed you while you were walking to school. These people were apart of the Gojo clan. They saw your white hair and blues eyes and they instantly all ran to you and grabbed you. You were terrified as you didn't know these people as they pulled you away. They took you to the Gojo residence and locked you into a room. After an hour or so they came in and inspected you closely before pulling you out to another room.
"Satoru! Get in here now! This is extremely important!" One of the people yelled.
Satoru then walked into the room as the door closed behind him. He then saw you and was extremely confused. Who was this 'stranger'? He didn't know what was going on in here. Neither did you. There were members of the Gojo family around the room making sure you couldn't escape and was watching the both of you.