FAIRY TAIL Vol 26

From the Kodansha edition

MASTER AGAINST MASTER Just as the S-class wizard test gets underway, everything goes wrong! Grimoire Heart launches a surprise attack on Fairy Tail. But the guild is just collateral damage – their real goal is much more sinister. At the vanguard of the invasion force is Grimoire Heart’s master, Hades… a man who only respects power, and has a history with Makarov!

Source: Penguin Random House API