Kirakira 100%

From Baka-Updates Manga
Miku is an ordinary girl, who has a crush on her classmate Shibutani-kun. Miku doesn't have confidence in herself, and holds her feelings inside. But one day, after a makeover with the help of her guy friend Yuutenji, she ends up confessing her love to Shibutani-kun!

A coming of age story by Megumi Mizusawa, the manga artist of Hime-chan's Ribbon.