We can't really tell if he is uncomfortable in this division or not. We will have to wait and see how he is going to fare in this fight against Akaho.
Nevertheless, if he is not going to struggle in weight then it's a + sign for him in this division. Yes, he will still need to go to a diet but maybe at not as rigorous as when he is at 118 lbs. For me, it's the question on whether he can bring his power or if he is too small in this division to make damage to tall and natural super bantamweight boxer.
And also his speed knowing that he is adding weight it will be affected since he is not really used to body shape, though a fighter needs to adjust and he really needed this break to make his name notice from this division, if he succeed then we will expect more from him showing his talent, Casimero will find a way to make his comeback noticeable, expecting to see a toe-to-toe engagement with Akaho.
It will be an interesting fight if Casimero will bring his entertaining skills. I mean, he loves the attention he must win the crowd here.
I really think Casimero would be too small and short at 122 just like Inoue. The difference between them is Inoue has the speed that might be enough to compete well at 122. We are looking forward to Casimero's return, let's hope he feels good and comfortable. Casimero needs to perform well in this fight if he wants to get a title shot next year. Although after this fight, Casimero can still drop again in weight so he can take a vacant belt once Inoue moves up after collecting them all.
So for now, our eyes will be on Casimero-Akaho, Inoue-Butler, and 122 WBA/IBF champion Murodjon Akhmadaliev against his mandatory challenger Marlon Tapales.