Pokemon XY, Vol. 8 by Satoshi Yamamoto

Awesome Pok?mon adventures inspired by the best-selling Pok?mon X and Y video games!X was a Pok?mon Trainer child prodigy. But now he's depressed and hides in his room avoiding everyone-including his best friend Y. An attack on their hometown by Legendary Pok?mon Xerneas and Yveltal, led by Team Flare, forces X outside. Now what? As the Gym Leaders desperately try to prevent Team Flare from firing their Ultimate Weapon, our friends Trevor, Tierno and Shauna meet a mysterious stranger who reveals vital information about the weapon's arcane history. Then, when Legendary Pok?mon Xerneas awakens, it looks like an epic battle with Legendary Pok?mon Yveltal is about to start. So why is Blue searching for a Legendary Pok?mon whose name starts with a "Z".?
Binding: Paperback / softback