Mishiro, stunning and socially admired, shuts out all male advances due to her utter lack of romantic experience. One day in the old archive room, she meets Kuro—a seemingly flashy guy who unexpectedly offers heartfelt romantic advice. But Kuro is actually a ghost. His condition to pass on? That she fulfills his... sexual desire. Thus begins a tense, unconventional romance between a timid beauty and a possessive spirit.