Takahiro is a dull ronin who lives with his father, a landlord. It was Takahiro's life that he couldn't get enough of, but one day Rena, a ridiculously erotic beauty, moved next to him. She seems to be a married woman, but for some reason she is curious about Takahiro. What's more, Takahiro can't control his excitement even though he's tempted by no bra.