Shuichi Kano, a manipulative man who exerts total control over his stepsister Noelle, begins a new position as a professor at the prestigious Takamine College. Using sexual coercion and blackmail, Shuichi quickly establishes a network of spies, including a fellow professor and the Director's niece, Shirone. By exploiting the dark secrets and traumas of those around him, Shuichi begins executing a calculated plan to dismantle the Takamine family from within.