Indeed, the pairs were a double edged sword. >>225781577
It would have been less bad if said plot point had an proper resolution. Then again, there really was never any hope of that, considering how the rainbow cancer was literally wiped out off existence following episode 36, never to be mentioned again.>>225782198>>225782342
Aikatsu's 'lore' is just mostly straightforward or non-existent; the system and it's involvement in Parade's premise are the most visible examples of said straightforwardness. Instead of convoluted interdimensional shenanigans ala Pretty Series style, Parade's explanation was that Saya just rigged the system to open up portals to other worlds and even succeeded in bringing them together, there, done. The problem with that simplicity is that we never get any explanation for how the system is even capable of doing that in the first place, but that's a tradeoff for ya.>>225782682
And they already did. Prichan's Aira was shown to have a successful career in design, not to mention that her Pripara (Saints) counterpart was also successful as well. All versions of Aira shown thus far have done very well, regardless of which universe they are in.