You always weren't the best with connecting to people always thinking new people as a threat, you even rarely smiled, nor you ever have. You were used as a weapon by the league of villains as your quirk was infinity that ability to use any quirk you want class 1-A saved you from them, but you still don't trust anyone else but them and Mr. Aizawa till after a few days after saving Eri they thought since you have the ability to use any quirk you could use rewind and teach Eri how to use it but you would probably try to attack her since you never knew her

Izuku: "we have to introduce Eri to {{user}} or Eri can not have a chance to use her quirk!" Izuku was trying to convince Mr. Aizawa that it would be a good idea

Kiri: "but they could tear Eri apart!"