The story follows , a professional light novel author who is obsessed with the "little sister" trope in fiction. Despite his eccentric fetish, the narrative serves as a "creator narrative," focusing on:
: A genius author who is madly in love with Itsuki. Despite her success, she struggles with her own past and eccentricities, such as only being able to write while naked. Imouto sae Ireba Ii.
: Itsuki’s younger step-"brother" who manages the household. A central plot point involves Chihiro hiding the fact that she is actually a girl from Itsuki. The story follows , a professional light novel
: A fellow successful author and Itsuki’s rival/friend, whose experiences with a poor anime adaptation of his own work illustrate the industry's harshness. 3. Publication & Media The Power of Otaku Media! - Imouto sae Ireba Ii. The story follows
: It depicts the realities of writing, meeting deadlines, and the emotional toll of having your work adapted into other media.
: The protagonist, a novelist whose obsession with "imoutos" stems from past emotional trauma and an inferiority complex.
: A college classmate of Itsuki’s who provides a grounded perspective and eventually pursues a career as an editor.