"Let's Fall in Love the Ero-Manga" centers on the life of Akira Tsubaki, a high school student and aspiring manga artist who dreams of creating a successful romance manga. Despite his passion, Akira struggles with a lack of real-life romantic experience, which hinders his ability to write authentic and compelling stories. His situation takes a turn when his classmate, the popular and confident Sayuki Ogiwara, discovers his secret ambition. Sayuki, who has a keen interest in romance and relationships, offers to help Akira by providing him with firsthand experiences and insights into love.

The narrative explores their evolving dynamic as Sayuki introduces Akira to various romantic scenarios, often blurring the lines between mentorship and personal involvement. Their interactions are marked by humor, awkwardness, and moments of genuine connection, as Akira navigates the complexities of love and creativity. Supporting characters, such as Akira’s childhood friend and fellow manga enthusiast, Ryo Saikawa, add depth to the story by providing contrasting perspectives on romance and art.

As Akira gains more experience, his manga begins to reflect a deeper understanding of relationships, though his personal feelings for Sayuki complicate their arrangement. The series balances comedic elements with heartfelt moments, examining themes of self-discovery, artistic growth, and the challenges of translating real emotions into creative work. The story progresses through a series of episodic adventures, each contributing to Akira’s development as both an artist and an individual, while also exploring the nuances of human connection and the pursuit of dreams.