JUR-169 - My fiancée, who said she had no experience in the adult entertainment industry, was so skilled that I was so suspicious that I kept leaving her. Fumino Satsuki

Fumino is the fiancé of Yu, the eldest son of a 150-year-old sake brewery. In order to marry into a prestigious family with a long history, she needs to be approved by her strict father... Fumino, who is pure and has an angelic smile, is the ideal wife... but... In fact, she had a different face as ``Karen-chan'', a legendary prostitute who has been NO for 3 years in a row. A true figure that must never be revealed. She appeals to her idea of ​​chastity and teases her with no sex until she gets married... However, for many years, the strongest Karen-chan (Fumino) has been using her ``amazing techniques'' without realizing it. Yuu begins to doubt Fumino. Then, the father also asks a detective to investigate Fumino's background... What will happen? ?