Shigisawa Rei is a lesbian career woman who has grown tired of navigating a society built around heterosexual milestones. Living in Japan, where same-sex marriage remains unrecognized, she has resigned herself to a life focused on work, believing that the traditional future of marriage and family is simply not an option for her. One night in the city, she unexpectedly reunites with Goto Saya, a charming and petite former colleague who once captured Rei’s heart. Years earlier, Rei had suppressed her feelings for Saya after she left the workplace to marry a man and become a housewife.

Their chance meeting takes an unexpected turn when Saya reveals she is having trouble in her marriage and, after a fight with her husband, has nowhere to go. Despite her reservations about falling for a married woman, Rei agrees to let Saya stay in her apartment. The close quarters quickly reignite Rei’s old crush, and she soon finds herself caught between her growing desire and the painful awareness that Saya is still legally bound to someone else.

The story follows the evolution of their deeply complicated relationship. As they live together, a strangely enjoyable domestic life emerges, filled with tension and unspoken longing. Rei struggles to interpret Saya’s flirty and affectionate behavior, unsure if it is genuine romantic interest or simply the clueless friendliness of a straight woman. The situation grows more complicated when Rei discovers that Saya has secretly been in contact with her husband, shattering the carefully constructed peace between them. In response to the betrayal of trust, a hurt and confused Saya decides to move out, apologizing for what she calls her freeloading.

As Saya’s departure draws near, both women are forced to confront their true feelings. The narrative explores not only the personal question of whether Rei will risk everything for a forbidden love, but also Saya’s internal journey to understand her own identity and the failure of her conventional marriage. The two-volume series culminates in a tense resolution, asking whether they can figure out their feelings for one another before the chance at happiness slips away.