A male masochist voluntarily signed an eternal house servant contract under Mistress Risa, surrendering everything he had built in life to dedicate himself to her forever. One and a half years have passed since then, but fulfilling his duties as a house servant with an aging body has proven far more grueling than imagined. Even minor mistakes during cleaning or laundry invite harsh criticism, followed by punishments like slapping and whipping. On days when the mistress feels down, he is forced to cross-dress or subjected to urethral play. Yet, whenever he sees her joyful smile, all his suffering fades away. Treated like a pet within the vast mansion, he sincerely vows to serve Mistress Risa as her house servant, devoting his entire life to her pleasure until his final breath.