Fairy Tail: 100 Years Quest manga volume 11 features story by Hiro Mashima and art by Atsuo Ueda.

After stomping the guild master, Selene takes over Diabolos and commands the seven strongest members to embark on a special quest. They must navigate their way through an enormous secret labyrinth and find Elefseria’s heart. However, because Selene’s gotta Selene, she makes the quest a game where she can enjoy the spectacle of seeing the members of Diabolos fight against Natsu’s team in a deadly race to see who can reach the heart first. With half of the members of Diabolos supposedly at Suzaku’s level of strength, it’s going to be a game of survival for Natsu’s team!