"Tales" series minor crossover, largely Tales of Xillia; concepts and abilities such as artes are borrowed and the storyline itself is tailored to reflect the general Tales design.

Twilight Sparkle finds life in Ponyville exciting and enjoyable: every day brings her a new friendship lesson or a challenge to rise to. She is as devoted as ever to living life the way she was taught a good pony should, and making Princess Celestia as proud as she can.
When Princess Celestia recalls her to Canterlot, Twilight discovers that not all of Equestria is as happy as she had once thought. Power outages and failing artes plague larger cities, but Princess Celestia has found a solution that she asks Twilight Sparkle to learn to tap into, so she can begin a New Power Initiative that will heal all of Equestria.
But there are heavy consequences for tapping into powers that ponies were not meant to have...