Sonnet is a cyborg/esper with a harsh background and now trained to be the ultimate warrior and most powerful weapon in the world. She is sent to Japan to watch Komatsuzaki Lan, who is thought to be controlled by the rage of the esper Akai Kiba (Crimson Fang). Lan is a quiet girl, who knows she is different from everybody else and starts to show signs of Crimson Fang after…