Ameri Aoyagi appears to have everything under control. A model first-year high school student and class representative, she is popular, sociable, and leads a seemingly ordinary school life. However, Ameri harbors a secret that she hides even from her closest friends: she is the author of a popular online fantasy romance novel, writing under the pen name Amelia. Her stories have gained a following, but recent reader reviews have left her troubled, with comments suggesting her writing lacks genuine excitement and stimulation. The problem is that Ameri has no real romantic experience to draw upon for inspiration.

This secure yet fragile double life is upended by Haruka, a mysterious second-year student with a reputation as a devilish playboy. Rumors swirl around him, including whispers of a stomach tattoo and a new romantic interest every night. The turning point occurs when Ameri accidentally witnesses Haruka in a clandestine, intimate moment with another girl in the school infirmary. In the aftermath of this encounter, Haruka stumbles upon her secret identity as the online novelist Amelia.

Rather than exposing her, Haruka makes a surprising and provocative offer. Recognizing her need for romantic authenticity to improve her writing, he proposes that they work together. This unexpected partnership becomes the central axis of the story, forcing Ameri into a close and complicated relationship with the one person who knows the truth. As theoretical plots begin to borrow from tense, real-world interactions, the line between her quiet research and genuine emotion begins to blur in this ongoing shoujo manga.