EliNozoKotoHonoMaki is drunk with aphrodisiac chocolate and Umi is tasked as bait while RinPana is busy with each other and Nico flee to get antidote from local mini mart lol
Actually, NicoPana is kind of a side-ship of mine, and of course Rin would be part of the package deal. So they'd be off doing their own thing on the next sofa over.
That squiggly smile would seem to corroborate your theory. The mindbroken also have heart-shaped pupils on a not infrequent basis, though Tsubasa's having star eyes might reduce the impact of that detail.