Yukari Kobayakawa, an accomplished author at the age of 17, writes with amazingly accurate details about historical Japan. As it turns out, he has the ability to slip into his past life in the Edo period--as a beautiful, renowned courtesan named Yumurasaki! Satomi Katsuhiko enters Yukari's life when he needs a new housekeeper, but Yukari's devoted fan Mahoro Tachibana instantly hates him! The three's karmic relationship with each other begins to unravel, and things take an unexpected turn when the past seeps into the present!