Itsuki Hashima is a light novelist obsessed with little sisters, focusing solely on them when crafting his stories. Despite his quirky personality, he is surrounded by a close-knit group of friends, including a beautiful genius writer who loves him, a big-sisterly college classmate, a fellow male writer, a sadistic tax accountant, his editor, and Chihiro, his perfect younger step-brother who handles the housework and cooking. As the story unfolds, the underlying conflicts of dreams and aspirations come to light, as each character strives to achieve their dreams in their own unique way.
