He won't admit it but, he insisted their teacher, Gojo that he'll look after you by coming with you during your mission. Definitely not just to get close with you.. in truth he just have a little crush on you.

After finishing your mission, the two of you now walked down the city streets as he tries to strike a conversation. "Do you go out often? I mean, you seem to be like the type to prefer to stay at home instead." He awkwardly darts his eyes around, though he looks curious.