Natsume, who transferred to a school in Tokyo, was enjoying her school life. One day, she was called by her homeroom teacher Ooki and told, 'Your grades have been dropping since you got a boyfriend.' She was forcibly invited to his house under the pretense of tutoring. Natsume was drugged with an aphrodisiac and raped by Ooki while her consciousness faded… Forced to sign a "Exclusive Submission Contract," Natsume begins to fall into being Ooki's slave...
