His duel with Fumin in this episode proved that he is capable enough to fight a trained ninja and it didn't help that during his first duel with Fumin. The fact that he didn't transform into Blue Mask and it's just regular Akira fighting with his two swords, it is hard not to be impressed with how Akira fought a trained ninja. They later dueled when Akira transformed into Blue Mask and unlike the first one where we see Fumin taking her fight with the kid like its child's play, her fight with Blue Mask proved that the kid has so much potential that he easily defeated Fumin!
Since I am quite focused on Akira, I forgot about Tube's plan in this episode! For the second time in a row, Tube's plan is to switch the faces of humans just for them to be frustrated! Since they are frustrated, it will be easier for them to... conquer the world! Seriously, when will Tube begin on doing plans similar to the one they had on the first three episodes of the show?