Shijima Tarou, a lonely college student, spends two years saving for a revolutionary, lifelike onahole from Orient Industrial. However, a setup error occurs during the initialization of his new companion, Naoko. Driven by desire, Tarou ignores the system warnings and uses the device prematurely, inadvertently completing the registration process through his own actions. Now permanently bonded to the glitchy but affectionate android, Tarou renames her Onako and begins his new life of pleasure.