Nicola, a martial artist that wields cowardice as a weapon, was kicked from the Hero's party. Betrayed by his comrades, he decided that he'll never work again. However, this freeloader was forced to become a teacher at Shanoa Institute.

A destined encounter with a frail girl named Alice.

In a world where a person's worth is determined by their strength, she was deemed weak. In order to change herself, Alice begs the coward Nicola to take her under his wing.

No rules! This is a coward's rise to power―A battle fantasy is about to begin!