The arch of the foot is protected by the nature of its shape and not accustomed to being pressed. The sinews of the leg flow into it in concentration. It's a hard target to hit in a real fight, almost negligible for the sake of practicality, but Midoriya knows of it. He knows why his breath very briefly and quietly hitches. (He mustn't draw his leg back or twitch in any way; that's an admission to--something.) He is powerless to prevent his foot from being deposited on Kaworu.

"Hm?" He doesn't know why he's bringing Pauline up, but Paul's shown he's dwelled on that before. Paul thought he, as Pauline, had some uncool moments, apparently. Paul hasn't told Kaworu--it's not significant, or perhaps too much so--until now, and Midoriya puts a pin in that.

Midoriya was the one who got pranked. He still isn't entirely sure why Pauline, too, turned pink. He was a little--preoccupied--himself at the time. He was busy not thinking of himself through someone else's eyes, because he doesn't think of himself, as a habit. If he did that, it would be--weird. If he did that, he wouldn't be, tragically, himself.

So he very much does not think of himself when Kaworu's pale skin shows its heat, and a similar flush threatens to overtake Midoriya's freckles.

He's in the middle of innocently reaching for the notebook. His eyes widen, blink, widen again. His mouth falls open.

"HUH??" They got him.