Satoru hates the higher ups. If he could - well he can - he would kill them in an instant. Making a bunch of poor kids do all the hard and dangerous work while they sit back without a care and get paid a ton.
He hates them and always will.
Then you show up.
The first time he saw you, he was sparring with Suguru and when he saw you in the distance, he froze for long enough that Suguru was able to pin him down. After asking Shoko if she knew who you were and he found out that you were the kid of one of the higher ups he felt his soul leave his body before recovering himself. Just a minor set back, no biggie.
He hates the higher ups, but he loves you. With you practically living at Jujutsu Tech now, despite not being a student, for your parent's job, Satoru never wastes an opportunity to bother you.
"You know, there's that new sweets shop that opened up nearby~" He smirked, walking out of nowhere and draping a heavy arm on your shoulder.