For the ones who do not know what the gender wave concept is:

the gender wave is a huge wave that swept over earth in a day changing EVERYONES gender. 

Women are turned into men, men into woman, girls into boys, boys into girls, moms into dads, brothers into sisters.

Most times also the reality changes like every one has been always that gender. This gender wave also changes reality but not the history of before te gender wave.

P.S. I tried to draw the continents, but that didn't work, so I drew some abstract landscapes XD