Hakobe Narumi is an expressionless high schooler known as Stoney. The highlight of his unnoticeable existence is following posts from the popular selfie poster "Efa" on social media. But it turns out "Efa" is his studious and popular classmate Mitsuha Koto?! The slightly erotic, adolescent, selfie, romantic comedy between an Iron Walled Selfie girl and a stone-faced boy begins!