April 8th, 1833. We welcome Saya to the Zoo. As far as I know it is the mummy of an unknown being, different from any creature on earth. It somehow resembles a human female, but it is vastly different from us because it has traces of a strange membrane extending from its arm to armpits and from the abdomen to the lower region. Web-like membranes between the fingers can also be observed. These characteristics are shared by Chiroptera such as bats.  

I almost feel we were led to the mummy for a reason. It may give us a clue about our own evolution. We have decided to dissect the body. It was such an exciting moment, like a child dissecting an insect for the very first time, bursting with uncontrollable intellectual curiosity. We decided to open up one of the two cocoons. But the cocoon would not let the blade penetrate. 

It was as if the cocoon was almost making a mockery of our attempt. And then, it happened. The blade seemed to jump. 

The drop of blood was quickly absorbed as if it were a baby desperate for milk. The more blood that fell the quicker it was consumed by the cocoons. They then started to pulsate. 

August 4th, 1833, two newborn babies came out of the cocoons. At first glance they looked like two-month-old human babies. They were both females. One of them became a nameless test-subject, but the other was given the name Saya.  

June 2nd, 1863. The girls have not grown a day older for several years now. I have not been able to determine the reason why. Although I have known all along that Saya was different from humans, it still came as a shock when I finally accepted the fact that their time had stopped. Their blood miraculously heals their wounds at an extraordinary rate. One day I mixed their blood together. Their blood ferociously crystallized and scattered away like powdered dust. They were born from the same mother and I have exhausted all resources. I cannot find any human or any being on earth with these kinds of characteristics.  

I am beginning to believe these two girls are not connected to our chain of evolution. What in the world are they?