Is that really alright...? I mean this song...it's a duet song.

[ Stating the obvious here, but what she means is that it's a Mika/Shu duet. It would be rude to barge in like that. ]

I think it'll be better if I just watch. But...

[ Suddenly, Riko becomes silent and watches Mika carefully without blinking even once. ]

Let's practice sometime together, okay? With Chika-chan and the others. Maybe we could even perform together...