Fairy Tail: Collection 20 (Episodes 227-239)
When a prestigious client requests the assistance of both Natsu and Gray, the boys momentarily set aside their differences and head to Sun Village--a city entombed by malevolent ice magic. Their investigation into the incident comes to a screeching halt when treasure hunters from the Sylph Labyrinth guild show up to stand in their way. As the wizards go toe to toe with the thieving trio, the battle quickly becomes the least of their worries--one by one the wizards are being transformed into adorable, child-sized versions of themselves! How can they hope to restore the village's eternal flame if they can't even fit into their armor?!
Languages: English and Japanese.