Fairy Tail Episode 158: Night of Shooting Stars
Episode 158 of 175 of Fairy Tail, aired November 23, 2012, 25 minutes. Available with English subtitles and dub where released.
Episode summary
It's "Hidden", the opening game of the Grand Magic Games, and Gray finds that it's like playing cat and mouse. Unfortunately, he's the "mouse" as he keeps getting picked off by a member of Raven Tail!