A story about SPARTAN-III soldier have became an Huntress and teacher in Beacon Academy. Her task is secret from everyone except the headmaster and few other teachers knows something. Even SPARTAN soldier had the adopted daughter named Katherine, an 3-year old cat Faunus child, when she's very much overprotective and kind-hearted around her. SPARTAN soldier's story is very strict, but except her name is Raine Xian. She and daughter will meet the students and team in the school academy. Soon the threat will not discovered and SPARTAN-B312 will do the best to protect the humanity and Faunus. Raine Xian(SPARTAN-B312 version) Katherine is belong to mine. Halo is belong to 343 Industries RWBY character is belong to ROOSTER TEETH PRODUCTION.