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.

A serious teacher suffering from a terminal illness was just planning to spend the rest of his life in peace and quiet. However, the problem students in the substitute class forced him to get involved in some troubles. Who knew that under the frail teacher's fur was a bad heart. The most bad teacher in the book has appeared! "I just want to be a teacher quietly and wait for death. In the little time I have left, I hope to see you grow up." Uesugi Shinji said with a cold face, leaning on a black umbrella, standing on the podium. That day, the students still thought it was just a joke from the teacher. Until the teacher [entered the small seat]