There is a strong likelihood that Inoue will stay in the division for a while if he becomes a champion. As long as Casimero remains the top contender, there is a good chance that the fight between them could materialize. The key factors that may come into play are the negotiation process and Inoue's genuine willingness to face Casimero. A potential matchup between them would finally put an end to the speculations surrounding Casimero and Inoue. I am eagerly anticipating the Fulton vs Inoue fight, as its outcome, hopefully favoring Inoue, could potentially pave the way for Casimero to challenge him.
That's a high possibility that Inoue would stay in this weight category as he has yet to prove that he can bring his power to a higher division. If he wins (Inoue) then a unification fight with Tapales is the biggest for this division to happen thus far and a fight with Casimero will only materialize if the latter will keep on winning and become a mandatory challenger as calling out Inoue without a belt or something might not interest the Japanese Monster to fight him as he has nothing to gain in fighting Quadro Alas.