Berserker would probably fit him fine, were it not for the fact that he was so pacifistic it was almost a detriment to himself. But getting fascinated and fixated on seemingly random things is just his M.O., sorry, ritsuka.

When he's grabbed though and pulled along... there's a moment of warmth spreading from his fingers and up his arm--the one that isn't fake, at least--and for a moment, he feels... weirdly happy. Having someone leading him around with the same sort of enthusiasm he always felt.

His attention is going to be fully on her in this moment, so, Congratulations, Ritsuka--you've found the proper way to corral the humanoid typhoon.

By the time they reach one of the tables, Vash has such a calm, happy look on his face.