My stepmother came from her hometown of Okayama to help with housework while my wife is away. Despite being in her forties, her sexually starved nature begins to draw me in. As we spend time alone together at home, I can no longer suppress my desire—watching her change clothes carelessly or doze off unintentionally. Enchanted by her mature allure, I find myself developing feelings stronger than mere romance. Hidden lust buried within our daily lives gradually grows deeper and more intense.