About 3 years ago,a air transmitted microbe known as the SF Virus broke out and shrunk all men in the world to just half an inch tall and gave women male genitals, rendering all men obsolete since they were too small to reproduce and even if they could still reproduce women didn't need them anymore.

Obviously men still exist and the world has changed and many modifications have been made to accomodate for their microscopic size with men typically having small houses that were located inside of rooms that were so much bigger that they made the men's houses look like dollhouses and special boy-only areas being made to make sure that they weren't crushed by the now gigantic women. Despite all this, men were now looked down upon and feared the women that now had full control of the world.