Sana works part-time at a family restaurant while growing increasingly distant from her husband, leaving her feeling that she no longer has a place in her own home. One day, her younger adult coworker Takuya invites her to an after-party at his studio apartment. As they chat, he suddenly looks at her seriously and confesses that he has loved her for a long time. Sana knows they should not cross the line, but her resolve begins to waver, leading to sex and a creampie.