Tenka Momose was a quiet and withdrawn child, but before long she realized that the most effective way to protect herself wasn't hiding from other kids--it was being the best at everything! After years of armoring herself with excellence, Tenka lives safely atop her cool-girl pedestal, admired and idolized by everyone. But her flawless composure is suddenly shaken by a very average schoolmate's impressively big dreams. At first Tenka is scornful of Erian Sato's ambition to become a K-pop idol, but the other girl's passion is so irresistible that Tenka soon finds herself with idol dreams of her own!

Inspired by Erian's sincerity (and her own unexpected jealousy), Tenka decides that she's going to audition at a famous Korean talent agency. But although her research powers and ability to memorize moves have helped Tenka excel in the past, the judges seem to be looking for something more than just flawless technique. Does Tenka have a chance at becoming an idol when the only thing she's good at is being perfect?