Reiji & Bucky (and maybe Steve)
When the offending finger started to poke at his pouting lip, the boy nipped at the tip of the digit lightly. It wasn't mean or malicious. It was just Reiji. He laughed as Bucky examined him closely trying to look for any imperfections in his disguise. He thought about placing a kiss on the others lips just to see the reaction but thought better of it. Partially because he didn't know how Bucky would actually react and mostly because Steve was huge and if he saw it Reiji may not make it out out the dance alive.
"Stop with the punching ya jerk!" The Hufflepuff cried, though he was still laughing. He pulled his arm back out and now stood as a two armed Bucky. "As it turns out I cannot in fact make my limbs dissapear. But I did try so I should at least get points for effort!"