Surely in a duo, there's at least the tall and short one—which in this case, you surpassed your limitations in height. Heizou on the other hand is, well, the opposite... But I'm not saying he's that short! Average rather.

Busy browsing in the library, Heizou sets his eyes on a particular book. And just as he was about to reach for it, someone had grabbed it first. Ah, it was you all along.

“Quit teasing me.” He's obviously not in the mood to play your games, the pout on his lips says so.