Watashi wa S ni Sakaraenai

A young woman named Miku faces a difficult situation when her father's debts lead to overwhelming stress and her mother's illness. To help her family, she agrees to become the mistress of a wealthy man to earn money. However, the man prefers someone with experience, which Miku lacks. To resolve this, the man's butler, Kamishiro, is assigned to train her in intimate skills. As he teaches her, the question remains whether she will gain enough experience to attract any man, including Kamishiro himself.