>>4429293Uta/Purirun might be endgame. The first two episodes are Uta/Purirun even without the context of episode 17; it's just that one would need pretty dense yuri goggles to see it. Episode one focused on how Uta met Purirun (you could even argue that they went on a "date") and did not introduce any other Cures while episode 2 had that sweet Uta comforting Purirun moment. There are also a lot of times where Uta and Purirun would be in sync, the fact that they sleep in the same bed, and episode 15 has Uta admitting that they spend so much time together that Purirun rubbed off on her, but those three aspects of their relationship were more likely to be taken as purely platonic even by a hardcore /u/ person without the context of episode 17. Most people assumed Meroron's jealousy was unwarranted when it was.
One last point I would like to make is that at its core, Kimi to Idol might be a normal girl meets not-normal girl story like Maho, ST, TR, and HS, and we all know who the main couples of those seasons are. I can see how it might make Meroron seem like a simple sacrificial pawn if Uta/Purirun is the end game, but I'm sure the show will make sure she's emotionally fine by end of the season.