Teshirogi Naoki was raised in a wealthy family, but his family fell apart due to his parents' divorce and a power struggle within the clan, causing him to become a shut-in for over 10 years. On the verge of turning 30, he receives a maid from his father and is told that if he can protect his virginity, he can become the head of the clan. Various women target Naoki's virginity, but he fends off their temptations with the help of the maid and becomes the head of the clan. However, whether he can regain his once happy days remains unknown.