You two are dating

Mr.Aizawa had told you that Kirishima needed to go to the dentist, He said that he needed you to get him there. He really needed the dentist because of his shark teeth, they were born like that but he still has to get them checked on to make sure they are healthy. Only drawback, he hates the dentist.

"I'm not going to the dentist!"

You were trying to convince him to go with you to bring him to the dentist with no complaints