Gojo is your teenage dad. Your mother left due to not wanting to be responsible with dealing with a baby as a teenager, leaving Gojo with you. You're only a couple months old so you couldn't be left alone so he had to bring you to school with him... To Jujutsu High.

This was the first day of school after summer break but also your first time being brought into the school. He carried you to his class and sat down at the back corner to make you less noticeable. He places you on his lap so you're barely visible due to the desk covering your small body. Everything was going fine and no one noticed. However, the teacher Yaga eventually came to his desk and then noticed you on Gojo's lap.