Kao dake wa Ii Amasawa-kun

Shiori is a fan of the face of Amasawa-kun, a very handsome high school model. However, it is rumored that he has the best face but a bad personality. One day, Shiori is caught taking a secret photo of Amasawa-kun, and she has to pretend to be his girlfriend to ward off the girls...? (Source: Kodansha, translated)