Girls and Boys unite! (SHINee fanfiction)

Karin is in a group band called Lone Girls with Shizuku, Andelia, Gizzy, and Skylar (A.n. : I made all of the names apart of Shizuku and Gizzy because Shizuku is my sister and Gizzy is short for Giselle). But when all five of them are supposed to take care of not-so-baby-like babies who are actually grown ups, "Just who planned this?!?!?!" "Whoever they are, they're pretty smart."