Thinking she's all by herself on the last train home, Nayeon feels the urge to enjoy herself by fantasizing about her desires. However, a reflection from the train windows show that a mystery man is on the same train. He comes up to her and offers his business card. At the thought of seeing this handsome stranger once more, she takes his offer and arrives at a place called Peach Puff. What is this place? What are these people doing? <An excerpt from the introduction>

■Characteristics■

1. I’m not satisfied yet! Nayeon’s taste

Nayeon, the protagonist of <An Innocent Sin> has a sexual taste a bit different from people. She turns on only when she’s in an open space under the fear that others may see her. 

On the train to home after work, she goes wild, and while she’s enjoying it she’s discovered by a man, who is the very her type. She tries to run away, but the man gives her a business card, telling her that there’s more suitable and safer place for her. Eventually She comes to visit the place of the business card.

2. Playground of grown-ups

The place she went was an adult’s playground, Peach Puff. The man who gave her the business card was Peach Puff’s watchman, one of the crew.

In Peach Puff, she could enter a playroom of her taste and level of intensity she wants. Actual intercourse is prohibited and anyone who is rude or violent would be dismissed from the room by the watchman. It was natural to her to feel Peach Puff as safe and joyful heaven.

3. Handsome guys to lust after Nayeon

Giving way to their persuasion, Nayeon comes to try the one-day trial of Peach Puff. Playing through odd and perverted games, she’s overwhelmed by a strange feeling and shame she feels for the first time, but soon she comes to pay her attention only to the watchman, Noah, who watches her play.

The other crews of Peach Puff seem to like her very much. Which handsome guy will she choose? I’d recommend <An Innocent Sin> to the readers looking for a fresh Reverse Harem work!