Original work: Bifidus: The Inn of Intercourse. A faithful live-action adaptation of the hugely popular work that topped surveys when it was featured in a magazine and smashed record sales in e-books! - Maria Himesaki

The movie revolves around the story of three individuals, Shizuku, Qiu, and Autumn, who form a complex and intimate relationship. The plot explores themes of desire, intimacy, and connection, as the characters navigate their feelings and boundaries with each other. The title 'Bifidus: The Inn of Intercourse' suggests a focus on the intersection of relationships, intimacy, and personal growth.