Dr. Kuraha has incredible medical skills and is 139 (141 after the time skip), yet still apears to be (compaired to a normal human and even lower level marines) extemely strong: breaking through stone walls, hurling battle axes and such. Was she a pirate? if so, who's crew? Perhaps she was a marine? or is she simply a great doctor and nothing more? There is very little evidence that I know of to support any argument about her past, did I miss something? What is your opinion on her past?