Androids and Humans

[Flashback; "Turquoise Tear"] Water and Snow. Two elements that have too much in common, don't they? So, they had human forms, and even past. Zero and Zane. How did they first met, how did they become friends, and even what happened before. A boy who lost his father by an earthquake. An android that never knew the real world. Two future ninja. [Oneshot, Rated T for Mentioned Death]