The Flames of Betrayal (Male Reader x Harem)

After being betrayed by Blake on the train, her younger brother Y/N was taken prisoner by Atlas. Experimented on by a mad doctor, he becomes the first ever human/Faunus to survive the Aura/Dust Integration Experiment, which earns him the revolutionary moniker of The White Fangs Sword. Two years later, he reunites with Blake at the shipping dock and his story begins to get a lot more convoluted. What will happen when he finds himself captured at Beacon after another betrayal and how will he escape?!