After some minutes the headache subsided so 'he' went back to 'his' room.
After some time memories started to float to 'his' about this new changed world but 'his' old memories are remained.
Apparently in this world not only female mean male and vice verse changed but even relative concepts such feminity and masculinity are altered.
In this world having a big penis considered femininy and wearing 'male' clothes are considered girly in society's eye.
To her surprise 'he' now now started subconsciously refering to herself as a she instead of a 'he' which her is.
She looked up the rules of the book and find the reason to the painful headache and the sudden memories:
"An event of major change to the fabric of reality caused by the book the universes rules before the change can the unpredictably altered to accomplish a balance of the old and new rules please be wise about change of a major scale."
First we she read through the rules she only thought it only meant that additional change would happen like if she were to give herself a tail biology would change to accomplish a explanation to the reason that humans had tail. But now she understood what it really meant by it.
After thinking about her change for a time she become more interested in this world.
Thanks to the alterations her memory about this earth was a little fuzzy and she only had memories about the more drastic changes or so she thought.