While the mother is hospitalized due to illness, the father and daughter live under the same roof. Unable to contain his growing desires, the father makes a move on his daughter, not allowing her any freedom and using her as his toy, and humiliating her in front of a teacher who has come to visit out of concern for her. As this continues to be abused on a daily basis, a sense of unity is born in the daughter's Kokoro, and the father and daughter begin to suck each other's lips like a man and woman in love, devouring each other and going wild.