Kanon Saeki has a sexual relationship with her history teacher, Mr. Takechi, but there is no love involved. She's maintaining this relationship under the guise of "taking revenge" for her late older sister, who was Mr. Takechi's girlfriend. But then, their relationship takes a turn... What does it feel like to love somebody so much it makes you go mad...!? This volume is a collection of three sensual stories filled with dramatic love!!from Renta!