While looking for a room to live alone, Manabu lives with his brother and his wife. Although he wanted to find her room as soon as possible, Manabu was attracted to her sister-in-law Kina. One day, Manabu, who came home from looking for a room, lost her reason when she saw Kana cleaning her bath. Then, when she rolls up the skirt of her bookmark, she pierces her meat stick and commits her bookmark from behind like a beast. Her intense piston, acting from the back that seems to be violated, while Kana refuses, repeats an unprecedented climax.
