Madoka, the heiress daughter of the clan who has served as “Kannagi” who exorcizes demons for generations.
At school, she was a perfect honor student, but after school she spent her days exterminating the town’s youkai, but one day she was caught off guard by the youkai and was attacked. It was her classmate who was a famous playboy that saved her from the desperate situation. She reveals that her true identity is her senior’s incubus Madoka, who takes her to a hotel as a caregiver. While her body is in a daze, her whole body is caressed, and finally her body is opened and she crosses the line… And every time Madoka cooperates with the exorcism in the future, A “Shikima contract” is made to hold and replenish spiritual power. “Reluctantly for the mission of exorcism”, Madoka’s body and mind gradually changes as she is hugged over and over…