The Rose of Nakajima

Ruby Rose disappeared at age three, lost in the woods of the island of Patch. Twelve years later, Haruka Nakajima of the Saint Church of Belka crash-lands on Remnant, the last living crew member of the Dimensional Warship Archon. With contact to both the Saint Church and the TSAB cut off, she is forced to turn to a local mage named Ozpin, and a family she never had a chance to know.