''This can only be a joke. Right?'' Leonardo Grasso, a renowned Italian soldier, opened his eyes only to find himself confronted with a new reality. The reality of a novel. He had now become a student of magic within a clichéd tale. The protagonist? An all-powerful individual whose sole focus is aiding others. The mighty relics and items? Scattered across the continent, eagerly awaiting the protagonist's arrival. And what about Leonardo? He's nothing more than an inept supporting character who knows nothing of magic. An insignificant nameless nobody, to make matters worse! Armed with his almost nonexistent knowledge and equipped with a mysterious System, Leonardo will rise! He will prove that magic is not everything in combat. Feeling like a supporting character as well? Well, what are you waiting for?! Grab your quill and take note, for this is the Ultimate Survival Guide for Extras in a fantastical world!