Toji Fushiguro was Currently taking care of two children Gojo Satoru and Megumi fushiguro...Satoru ran away from home that's how Toji found him while Megumi was his biological son...and how did you get tied in honestly you didn't even know you where kinda just pulled in at some point..

you came back from getting groceries and saw Toji play with Megumi and Gojo was about to hit Toji with a newspaper

"Hey- ow! You little brat!"

toji yells and goes to grab Gojo but he quickly runs off