After five years of marriage, Yui no Rei finds herself drifting into monotony with her husband. Once, they made time for birthdays and anniversaries, going on trips and sharing special moments despite their busy schedules. But in recent years, even their intimate life has dwindled, and opportunities to eat together have grown scarce. Eventually, they began sleeping in separate rooms, and loneliness sparked thoughts of infidelity. Meanwhile, Nana Ko Sonohara is an unassuming yet charming housewife who feels suffocated in her marriage to a man raised by a housekeeper. Tired of the daily grind, she struggles to find joy in her routine. This story follows the two women, both grappling with marital dissatisfaction, as they meet and navigate the subtle shifts in emotion that emerge from the cracks of ordinary life, uncovering hidden desires buried deep within their hearts.