This is stupid as fuck. How am I supposed to take him seriously as a rival when he is dumb as bricks? The only reason this whole thing is happening is a variety of coincidences forcing Akira into a bad position. That's just shitty writing. Give him challenges not because of bad luck and forced plot but because he is making mistakes or has opposing beliefs to the people who challenge him.
I know she probably has reason for stealing but if you're stupid enough to not give back the money from the man who tracks you like that and knows your face your real fucking dumb to be honest.