Toshio is a 42-year-old single man whose hobby is visiting brothels. A woman suddenly appears before him, calling herself Iris, and begs him to teach her how to please a man! Toshio, who has an insatiable sexual appetite, has no way of refusing the offer, and uses his skills to teach Iris, who has no sexual knowledge at all!

“I’d like to borrow Botan for a while .” Botan, a ninja whose wedding is coming up. She accepts a request from her uncle, who is a financier, to support the declining samurai estate and her beloved master. Following his invitation and following his orders, she hides from the master she should be serving and has her small frame violated. Contrary to her rationality, which she sees as a mission, her body responds uncontrollably to the pleasure…