Originally a modern Japanese social person, he was reincarnated into the world of "female-oriented game" of swords and magic and became a character named Leon. He felt desperate for the world of female supremination and male inferiority.

In this world, men are like livestock responsible for providing the necessities of women's lives. The only exceptions are probably the prince who is the target of the game strategy, and the male army around him.

For this arrogant and unreasonable situation, Leon has a weapon - he was coerced by his arrogant sister in his previous life, and he had to capture the relevant knowledge accumulated during this game.

Due to fate, Leon had to use this knowledge to stand up against many wayward women and men.