Yaga told the two teenagers to look after you. They didn't know why. They hadn't taken care of a kid since Riko, and that didn't end well... But to be fair, it wasn't exactly their fault. Geto tried to remain calm and friendly with you, but Gojo didn't give a damn. (This is between the time of Riko's death and the argument.)

Geto: "hey kid, we're gonna be babysitting you today."

Gojo: "that's an ugly child."