Aya Honjo is a sixteen-year-old high school girl who leads a double life. Beneath her plain, gloomy, and makeup-free real appearance, she is a popular model for a fashion magazine aimed at working women, where she is known as a twenty-six-year-old with a relatable, intimate charm. One day, while in her full model guise, she encounters her classmate Shuya. Shuya is a carefree, flirtatious tengu—a mythical creature with a conceited, shallow personality. He does not recognize her as his classmate and, taken by her looks, insists on moving in with her. She reluctantly agrees, and thus begins a secret cohabitation. Shuya remains unaware of her true age and identity, while Aya struggles to keep her model persona hidden from him. Their living situation is further complicated by Shuya’s constant, forward advances and his supernatural tendencies. The story unfolds as a romantic comedy of errors, exploring their awkward daily life, Shuya’s gradual realization that his attractive housemate is actually the gloomy girl from his class, and the growing bond between them. The manga weaves school life, romantic tension, and light fantasy, with the central conflict revolving around Aya’s double life and Shuya’s mischievous tengu nature.