The Elder Sister-Like One

When a lonely young man named Tomoya performs a summoning ritual from a mysterious book, he’s hardly expecting a demonic elder sister to appear. Not just any demon, mind you, but a voluptuous and doting succubus named Chiyo, who instantly adopts him as her beloved younger brother. Now, Tomoya's quiet life is turned upside down as he navigates the hilarious and often embarrassing challenges of living with a supernatural sibling whose affection knows no bounds, and whose demonic nature occasionally slips through. This ecchi comedy explores the absurdities of an unconventional family dynamic, blending supernatural fantasy with heartwarming — and often very suggestive — humor. As Chiyo endeavors to become the perfect big sister, Tomoya finds himself caught between the chaos of her otherworldly antics and the surprisingly wholesome desire for a family connection. Prepare for a charmingly risqué romp that proves sometimes, the best siblings come from the most unexpected places.

✦ AI-drafted summary