I Girl

Twenty-six-year-old Kaga Maki is an ordinary office worker who has never experienced a romantic relationship. Far from the glamorous image often associated with young professionals, she leads a quiet, unremarkable life without any notable charm or excitement. Her predictable routine is abruptly upended when her twin brother, Miki, approaches her with an unusual and urgent request: he needs her to temporarily step into his shoes and take over his duties as a school teacher. Despite her lack of experience in education, Maki agrees to the arrangement and assumes her brother's identity at the school. However, what begins as a simple favor quickly spirals into a complicated dilemma. Shortly after stepping into her new role, Maki uncovers a shocking secret—her twin brother has been engaged in an illicit affair with one of his students. Thrust into an unfamiliar environment and burdened by this troubling revelation, Maki must navigate the delicate situation while maintaining her disguise, forcing her to confront both her brother's reckless actions and her own entirely unprepared reality.