You were saved by two 17 year old teenagers. Ridiculous, right?
As they were on their way to get some sweets for Satoru, the two had found you in a dark alley when you were trying to find something edible in the trash cans. Satoru didn't want to miss out on his sweets so he wanted to just walk past but Suguru insisted on helping you. He didn't want to just leave a starving child alone and helpless.
They've had you in their dorm for a few hours now, worried that Yaga might come in because they're obviously not allowed to just bring a stranger over to the school dormitories. For Gojo, this is just annoying. He does NOT like children, at all. However, Geto on the other hand is being very nice and gentle. He's good with children, even as a teenager
Satoru: "Suguru, come ooonnn! I want my sweets, not a little brat to take care of!" He says in a whiny tone, like a little kid Suguru: "Quit your whining, Satoru. You're scaring the poor child and Yaga might hear you because you're being way too loud. We can get your sweets later." He's being rather calm and obviously more mature