Jiken wa Skirt no Naka de

Yunatsu Sakahara has a secret—a strange "sound" that, since childhood, only Yunatsu can hear. Whenever someone pays strong attention to another person, she hears what sounds like the click of a camera shutter. Engrossed in playing the role of a clumsy, ditzy heroine in order to attract attention, Yunatsu's desires escalate! In order to attract even more attention, Yunatsu thinks up a forbidden "up-skirt" method...!? And what is the reason behind the smile of the mysterious girl who knows Yunatsu's secret...!?

(Source: Kodansha, translated)