Welcome to the F class, also known as Failure class. In this class, every student that is in it has at least committed one crime at least. Normally, a class like this wouldn't be formed in the first place. However, the government suggested a certain school to take care of this class for a certain reason. They wish to morally reform the members of this class before they hit the legal age of going to jail.

The protagonist, Daniel Lead, after committing a certain crime for a certain reason, will be part of this classroom starting now. Being 15 years old, can he change his situation before he is 18 years old and goes to jail for what he did?