Otsuka Hikaru (nee Ohno) is an Original Character... Nitramy: It's actually not, as you'll find out below. ...for Nitramy's "Naruto: Arcane Heart" series of crossover fanfics featuring Naruto, Magical Girl Lyrical Nanoha, and many others. As of the latest chapter of "Naruto: Twin Fates", Hikaru is currently in training at the Temple of Origins, striving to control the power of her bloodline.