Second 1: The Awakening Stone explodes, and everyone is dumbfounded.
Second 2: Test results: F-grade ordinary human. The whole internet mocks him.
Second 3: People from the government show up at his door. He calmly offers them chopsticks. "Want to eat?"
Second 4: Official announcement: An F-grade has been selected for Dragon Abyss. The news blows up online.
Second 5: His ex regrets it? Too late.
Second 6: An A+ grade comes looking for trouble? One slap sends him flying.
Second 7: A Lord-level comes to test him? He tells him to go back and get a bowl. The boss is coming to eat.
This is the story of an "useless" F-grade who turns himself over to the state, then tells every enemy, "Drop by for a meal when you have time."
Who says an F-grade can't defend the nation?
He can. His mother can, too.