Here are my predictions for what the second tracks will be in Afterglow's, PasuPare's, and HaroHapi's new singles:

Afterglow: I'm thinking it will be "I love your way!," since it's the oldest original song that hasn't been in a single yet.

PasuPare: As with the last one, it will probably be "Attsuatsu Tokonatsu Love☆Summer!", because it's the oldest original since the Waku Waku single.

HaroHapi: There's only one choice and that's "Smile Boquet de Ta〜maya〜!"