Private tutor Yuu lives with his former student and girlfriend, college student Chika. Lately Chika has been cold towards him, and Yuu is worried that she has lost interest in him. One day, he contacts a detective agency he found on the internet to try to find out Chika's true feelings... Akari, the ruthless but beautiful president of the detective agency, and Ryo, Akari's excellent staff member who is known as the "breakup specialist." Each of their intentions, the traps they have set, Kokoro and bodies intricately intertwined... A story of the desires of four women who indulge in the endless pleasure that only women can understand, begins now!!