As it develops, it becomes distinctly humanoid, and at one point has grown enough to even simulate sex with Toshiaki Nagashima, though this proves to be a ruse, as Eve only did it to obtain a semen sample.
Simultaneously, Kiyomi's distraught husband had managed to get a liver sample of his now-deceased wife, and had been keeping it alive in his lab. Toshiaki shocked by the return of his deceased wife Kiyomi.
The Eve mitochondria in this kidney gradually alter Mariko's body, so that she will be capable of giving birth to a mitochondrial creature with a perfect form, as Eve's body is rapidly drained by the overflow of energy produced by her advanced mitochondria. One of her kidneys was transplanted into a teenage girl by the name of Mariko Anzai. This car crash was planned by Eve, who had previously influenced Kiyomi into getting an organ donor card. On her final birthday, she suddenly finds herself asleep at the wheel, dreaming she awakens just as she crashes into a telephone pole. On her birthdays, she has a recurring dream that is reminiscent of projected conditions on earth from millions of years ago, before the symbiosis between mitochondria and cells proposed by the endosymbiotic theory. In the novel, Eve is revealed to have developed over the years in a Japanese woman named Kiyomi Nagashima. The first Eve Main article: Kiyomi Nagashima