Natsume, who transferred to a school in Tokyo, was enjoying her school life. One day, she was called by her homeroom teacher Ooki and scolded for 'having a boyfriend and letting her grades drop.' When Ooki insisted on tutoring her at his home, Natsume was forced to drink an aphrodisiac and was raped by Ooki while her consciousness faded… Forced to sign the "exclusive subjugation contract," Natsume falls into becoming Ooki's slave…
