Suzu Omi Narumi Hakobe is a high school student who constantly wears a blank expression on his face. Even in class, he?s quiet and unassuming. His joy in life is keeping up with posts from ?Efa,? a girl who takes lewd photos and posts them on social media. But soon, he finds out that Efa?s true identity is none other than?his diligent and popular classmate Mitsuha Koto??!

Lately, Stone-faced Narumi Hakobe and popular Koto Mitusha have been getting closer thanks to sharing the secret of Koto?s secret racy social media account, Efa! But just when the two start to get a little cozy, his gyaru little sister and his childhood friend make their way into Narumi?s life! Just what is going on here?!