The Legend of the Fairy Warrior, Erza

When Erza hears that her father, Rob, is sent to go to war against Oracion Seis, she takes matters in her own hands by disguising herself as a man. But she's not alone. She has Natsu, a small pink "dragon," who will help her keep up her masquerade of being a man. But how can they make it work when her captain's her...