I definitely think he is ambidextrous!! So happy someone also feels this! I mean how else would he be able to cut that bangs that perfectly… Akashi plays many instruments like piano and violin, so it’s very likely both his hands are skilful.
He absolutely play basketball with both hands -my knowledge about this sport is limited but I suppose most players do this?
But from many official art (even drawn by Fujimaki himself), Akashi’s chopstick-wielding hand is the right one:
somehow this becomes a post of Akashi eating with his friends ♡⊂( ´ ▽ ` )⊃