Kaitou! Pokemon 7

Synopsis:

By day, Hiori is a typical boy with a Pokemon named Lucario that he loves to battle. But by night, he's the mysterious Pokemon 7, a thief who steals stolen objects from bad guys and returns them to their rightful owners! All Hiori wants is to be a force of justice, but it won't be easy. With rivals-turned-friends to handle, a childhood friend to hide his identity from and Team Galactic - an evil organization who use Pokemon to commit crimes - being inexplicably tied to his long-lost twin sister, Hiori certainly has his hands full as Pokemon 7!