The narrative delves into the widening void of Yukina’s marriage—a union fracturing not from a single dramatic event, but through the steady erosion caused by contempt. Her visit to her husband, hospitalized following a workplace injury, becomes the ultimate test of her indifference. Instead of finding a remorseful spouse, she encounters a man who shamelessly flirts with any woman who crosses his path. For Yukina, this is the final straw—confirmation that her place in his life is irrelevant. She retreats to the solitude of a hallway bench, a symbol of her emotional isolation.
It is in this vulnerable state that Yuto appears—a young man radiating a light her husband has long since lost. He, too, is visiting the hospital; upon seeing Yukina alone, he offers her a coffee—a simple act of kindness that resonates with unexpected power. Yuto is attentive, warm, and genuine—a stark contrast to her husband’s crudeness. Yukina immediately categorizes him as a "fleeting distraction": someone to admire from afar, a temporary balm for her troubled mind.
Yet fate—or perhaps her own subconscious—intervenes. A help-wanted sign for a part-time job at a café catches her eye; it is not the need for work that draws her in, but the slogan: "Become independent." It is a silent cry of rebellion. She dives in headfirst, driven by a desire for change she barely understands. On the other side of the counter, a life-altering coincidence awaits: Yuto is the café’s owner. She is hired on the spot. The café—a new venture—becomes their private universe, an intimate space shared by just the two of them.
This encounter sparks a profound transformation. The woman who had once "given herself entirely to her husband" now finds herself in an environment where she is truly seen, valued, and desired. The narrative centers on the emergence of a "dirty routine"—not merely due to the physical act itself, but because of the immorality surrounding it. Every day at the café, every interaction with Yuto, becomes steeped in an unbridled desire born of comparison and rejection. It is the story of a woman who, while seeking independence, discovers a new form of submission—this time to a desire that makes her feel alive for the first time in a long while, marking the start of an affair as dangerous as it is irresistible.