first off evryone on earth will be aware of this change
through an accident at a secret government a wave of energy was transmitted across the entire world whoch caused everyone to change. but what was this change?
this change would cause people to swap sexual parts with the closest person of the opposite gender so a male would grow the breasts and pussy of the closest female to him and a female would grow the cock and balls of the closest male to her. if a person were to swap with someone who had not yet had the develop then they would have to wait for these parts to develop for example if a male swapped sexual parts with a newborn girl he would have to wait about 12 for when that girl would have started puberty for his nee parts to start developing.
but the wave was just washing over the world now and a big change was going to happen.