Hmm, when the Adam Cyclops shows her true colors, she first calls Adam N. "Onii-chan", but changes afterwards to "Onee-san" upon finding out Adam N. is actually a girl. Then she says the following:
"I didn't realize it at first because
I had heard you were created as an xy-chromosome type. But it seems you're a girl just like me."
In case someone don't know, it's the sex-determination system found in humans, most other mammals, some insects and some plants. In this system, females have two of the same kind of sex chromosome (XX), and are called the homogametic sex. Males have two distinct sex chromosomes (XY), and are called the heterogametic sex.
The entire cause of why the Adam Cyclops spent about 2 years searching for Adam N. and couldn't find her was because she was given an info completely opposite to what she is actually. Shortly put, a MALE, Adam N. was originally a male.
At this point and with the arc heading to its climax, people already should have realized this. Of course, I'm not gonna force you if you don't want
