LogFAQs > #980326050

Somewhere in the timeline you're in with S2, Crychic is forming......but that's suppose to be later.

So Hello Happy World have been my least favorite band both music and character-wise (aside from Misaki and Kanon, I like them both a lot)....but they serve their purpose well.

In-universe, they're the group that appeals to kids, and with all the seriousness that happens with the other bands, it nice to have one that's over-the-top silly. There's a joke that all of Sakiko's problems could have been solved if she just ran into Kokoro.