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Koishikawa Miki, a cheerful high school girl, faces a shock when her parents announce they’re divorcing to swap partners with the Matsuura couple, whom they met on a trip to Hawaii, and all four will live together with their son, Matsuura Yuu. As Miki adjusts to this unconventional family setup, she finds herself drawn to the cool, enigmatic Yuu, sparking a romance complicated by their new sibling-like dynamic. Alongside friends like the bubbly Meiko and Yuu’s ex Ginta, this heartfelt tale blends love, family, and emotional twists, following a girl navigating the sweet and sour complexities of her blended household and young love.
