[That's all it takes to destroy the atmosphere. Gai would've left his hand there, probably even made some attempt at encouraging words... had Shu not called him out on it. But now his action has been acknowledged as out of the ordinary, and it's just awkward.
So he quickly pulls his hand back and acts like he didn't just do that.]
Action
So he quickly pulls his hand back and acts like he didn't just do that.]
Just forget about it.