Atom03

When I woke up one day, it was the same as usual, but there was one thing that had changed about the world.
The concept of sex had disappeared from the world.

In a world where sexual knowledge has disappeared, women's sense of shame has changed greatly.
If you ask her, she can easily show you naked, and she won't get angry even if you rub her boobs or touch her pussy.

The protagonist, who is the only one in such a world who remembers the concept of sex, does erotic things with beautiful girls as if to regain her dull life.

Using his sister as a masturbator. He gives erotic massage to a sports girl. His twink girlfriend and his predatory sex.

The ugly hero's unlimited erotic life begins!

Table of Only I Know the Sex

Table of contents

Volume 1