>Purirun/Meroron is there by default
>Nana/Meroron is teased because of how much Nana is into Meroron, and she even seems to play an active role in her redemption arc
>Uta/Meroron is presumably pushed by the movie or at least the advertising with the next 3 episodes possibly also pushing that because they air right before the movie goes on theaters
Now all we need is Kokoro/Meroron shipbait, other than Meroron waving the purple kirakilight on the title card. I have seen some Kokoro/Meroron fan art, but that ship just has aesthetic going on to be honest.