Bleak Fate

"Ten million years ago, the Upo and Humans fought side-by-side. Then came the ultimate betrayal—humanity slaughtered nearly the entire Upo race. Pip, a twelve-year-old survivor with the mysterious spatial ability 'Save/Destroy', and Kael, a self-proclaimed genius who can travel through reflections, are dragged into the cruel purgatory of Aethelgard Academy. In a world of ruthless magic, high technology, and murderous candidates, can two broken remnants of a lost tribe survive the culling?" — Description from novelcodex.org