Arahama Yuu is a man who prizes his freedom and avoids the responsibilities of marriage, preferring to maintain multiple casual "sex friend" relationships. When one of his partners, Misako, tries to push for a committed relationship, she discovers his other partners, leading to a tense confrontation among the group. Despite the chaos and the desires of the women in his life to secure a future with him, Yuu remains steadfast in his commitment to a bachelor lifestyle.