Fairy Tail Episode 17: Burst
Episode 17 of 175 of Fairy Tail, aired February 7, 2010, 25 minutes. Available with English subtitles and dub where released.
Episode summary
The demon, Deliora, has been released! Natsu, Erza, Gray, and Lucy try to stop the demon but it turns out there is no need. Erza, Natsu, Lucy, Gray, and Happy's then turn their attention to helping the villagers.