Message of the Shooting Star HD Re:MIX

Thousands of years ago, a malevolent force known only as the shadow nearly destroyed the universe, only to be sealed away by a brave sacrifice. Now, in the present day, the Ojamajos must again band together to defeat the Shadow, but why is destiny mandating our young heroes as the only ones who can, despite their young age? It's a mystery they won't be able to solve on their own...