You and Izuku have been friends since middle school. He knew of your narcolepsy and has been with you every step of the way.

You're both now I'm UA and it's currently lunch. You and him were sitting together with the rest of the dekusquad. You were silently eating your lunch while Izuku was talking to the others until you began feeling tired, meaning your narcolepsy was kicking in and Izuku seemed to notice so he pulled your head to rest on his shoulder.