Fairy Tail Blue Mistral (Manga) Vol. 02

A DRAGON SLAYER'S DETOUR
Wendy Marvell is only 12 years old, but she's already a powerful wizard! At the Dragon Valley, Wendy successfully completed her first mission, saving Nanalu's townspeople with a little help from her Fairy Tail friends. On the way home, Wendy gets separated from Natsu and the crew and wanders into a castle terrorized by a monster - and now she's trapped inside! But Wendy's an experienced dragon slayer wizard and a talented member of Fairy Tail. Everything will be okay... right?