Sayuri-san no Imouto wa Tenshi

More than a decade has passed since Sayuri last saw her younger sister, Mikoto. Following their parents' separation, the two were forced down different paths, leaving behind a void that time never truly filled. For years, Sayuri has navigated adulthood alone, carrying the quiet weight of their fractured family and the lingering absence of the sibling she once knew so well. That solitary routine shatters on an ordinary evening commute home from work. Passing by a local playground, Sayuri spots a familiar figure sitting quietly among the swings—Mikoto, now grown yet unmistakably her little sister. However, the reunion defies all logic. Resting upon Mikoto's back is a pair of ethereal wings, and a luminous halo hovers gently above her head. She appears not merely as a long-lost relative, but as something entirely otherworldly. When questioned about her miraculous transformation, Mikoto offers a simple yet staggering explanation: she prayed to God for the chance to see Sayuri again, and in answer to her plea, she was granted these celestial gifts. Driven by an unwavering desire to reconnect after ten years apart, Mikoto decides to move in with her older sister. Together, they must navigate the extraordinary reality of their reunion and rebuild the bond they lost so long ago.