Shikijo Kyosuke is a high school student with a policeman father and a dominatrix mother. He seems to lack any traits from his mother, but shares his father's strong sense of justice, even though he is weak. He joins the school's martial arts club to become stronger but fails.
One day, Himeno Aiko is transferred into his class. Her cute appearance and behavior attract Kyosuke, and he quickly falls for her. Suddenly,
