Well, right now, Casimero should know his place first as he is a first timer in this division and might be best for him to lower his head first because he doesn't have anything yet to boast. Not sure what happened to him lately after he was stripped because that made him changed but there's surely a reason why or he maybe just learned his lesson because having a bigmouth seems not helping his situation.
Indeed he has to prove himself on this fight. Going up after losing the titles and the scandal that cost him his title is a huge factor that downgrade his popularity. So he should KO Akaho in this fight to regain those lost popularity and once again prove that Casimero did not fall to becoming an oridnary boxer after moving up his weight division.
I agree that a knockout will be the ultimate goal for Casimero to retrieve what he has lost recently, except for that title, obviously. But a win is a win even if it is just a UD. He should just forget about achieving more if he cannot really do it this time as he still needs some adjustment because he haven't got any fights for some time now. Defeating Akaho will still mean the same thing, he will still go through the ranks.