One day, Lee Seon-woong was summoned to another world.
Like other otherworldly summoning heroes, he gets a cheat from the goddess and swells up at the thought of traveling, but it’s not only his bulge that swells up, but also his brains.
Yes. This is a different world without men. He was summoned as the world’s first ‘reason’ to a world where there was only ‘woman’.
The story of Lee Seon-woong, a man who is full of idiots with no sexual knowledge, and uncovers the secrets of this world!