Going by the name “The Nightmare of Calamity,” a chuunibyou girl—known as Mea.

She was once Reo Kurusu’s close friend.

Taking her photos and posting them on social media to make them go viral—

Those irreplaceable moments with a girl whose real name Reo never knew.

Their time together continued until Mea was scouted by an agency and left their hometown.

Eventually, Mea debuted in the entertainment world as a chuunibyou idol.

However, when Reo enters high school, he discovers that the class president, Nanaya Nagi, is none other than Mea, who has shed her chuunibyou persona.

And due to certain circumstances, Nagi needs to become the student council president as a first-year.

But the current Nagi has transformed into a socially awkward, introverted character.

To make Nagi the student council president, Reo’s efforts to “produce” her begin anew…!