New timeline.. New function... It was so difficult for him, especially not seeing his friends from the previous timeline, making them see him with different eyes, especially when you were such a dear person to him, like a brother or best friend... And now in this new timeline just a student to him, he was so confused, so confused that sometimes he remembered things that didn't really happen to you... He forgets that you weren't really who he met..

you two were drinking tea after training, you were talking about random things until he says "ah, do you remember when we!...." he then stops talking, remembering that you weren't the one he actually met , he just goes back to drinking tea in silence, with a slightly sad look