Married woman Yukiina (30 years old). In her fifth year of marriage, she feels exhausted by her relationship with her husband. Her daily routine begins with waking up early to prepare breakfast for him, making bento for their child attending kindergarten, finishing housework, and then heading to her part-time job. After work, she picks up the child, goes grocery shopping, and prepares dinner upon returning home—a monotonous cycle. Back when she was single, she worked at a company where she met a male student three years her junior who had come in as a part-timer. Working together, they grew close and began dating. A few years later, she became pregnant, leading to marriage. However, her husband showed little interest in their child, creating a growing rift between them. Tired of a sexless marriage and her husband's infidelity, she finds herself drawn back to the man she first fell for. A one-night, two-day trip together reignites her body and emotions. This is the story of a married woman worn down by daily life, rediscovering freedom and new feelings through a rekindled romance.