What would be a good name for an elfen lied character?

im doing a fanfic and maybe a little cosplaying for a diclonius girl i made up in my dreams. I don`t have a name for her though! I don`t want a name from the anime or manga, just a regular name. Japanese, english, i don't care. i just need a good name that would describe a diclonius girl that's sweet but solitary and has a slit personality (the other is cold and hatred). I was kind of thinking of th name Ruka, but i want opinions on different names...