One fateful night, Haruki Hitomi, a tired 27-year-old office worker drowning in alcohol, encounters three charming sisters on the run from home. The eldest, Iori Kozakura, exudes a fierce demeanor tempered by a hot temper. Roka Kozakura, the mischievous second sister, revels in her teasing antics. Lastly, Hakua Kozakura, the youngest sibling, struggles to maintain a mature facade, often slipping into childlike behaviors. Amid this chaotic cohabitation, Haruki's work-life balance shifts as he reduces overtime and adopts healthier eating habits. What once was a monotonous existence blossoms into a vibrant romantic comedy, painting his mundane days with a touch of whimsy and warmth.