Let's say he got lucky to climb the top 5, the champions here are really tough to beat and I doubt Casimero can match those 2 champions holding the super bantamweight titles.
I hope Casimero can be considered by Inoue once the latter moved up weight. Inoue is expected not to go directly facing those champions once he moved up but for that fight against Casimero should happen, the Quadro Alas of PH should at least make it to the top rankings to be considered.
IMO those 2 champions at super bantamweight division is more easier than Inoue, if Casimero will fight against Inoue, there's no hope Casimero can win. At least Casimero need to beat either 2-3 boxers at this weight before taking a challenge to fight one of those champions, I think Murodjon Akhmadalievb is easier than Stephen Fulton to beat. It seems there's no way for Casimero to escape against Inoue, we might see they will fight each other sooner or later.