The shockwave's impact on the world would be felt almost immediately, as it caused men and women to meld together, with women growing a penis where there clitoris was (and a small internal sack where testes would reside) and men losing their scrotum and gaining a fully functional vagina and everything that went with it. They also adopted secondary sexual characteristics, with women gaining more muscle and getting taller on average (with some also developing additional body hair, especially across their face). and men growing wider hips and breasts. Across all individuals, breast and penis size also increased on average.
With the shockwave moving towards a major city, who would be the first to feel its effects?