Even if Shoyo hadn't been animated, even if he had simply raised an eyebrow in the manner of Midoriya's intimidating homeroom teacher Aizawa, it would have been just as mortifying. Midoriya had no friends in junior high. He's always been a nerd, still is, even if he's a jerd now. Absolutely no chance, no way, did he ever think he'd be mistaken for someone who--does things like that--in a bathroom, as a guest at someone's party no less!

He's the one. The nice one. That's him... Please kill him now.

He can't speak. He can only press his lips in the thinnest of strained non-smiles, eyes wide, and bring one hand up for the weakest, most awkward fistbump of his life.

Finally, he croaks a small "Th-Thank you..." before stiffly turning and making his way to the starting point. He'll explain what he knows of Quirkless fighting, Ozpin's particular brand of teaching, how to watch out for structural damage in the tower, precaution against unknown monsters... in a bit. He needs a moment.