Jake entered the door marked puberty at 5. It turns out that anyone who entered this universe had to start at the same age as everyone else and in the nude, so Jake went from being his 18 year old self back to being a kindergartener as he became super skinny and now had a full head of hair, his clothes were now too big for him but he didn't care. He was too interested in the new universe, he saw that girls were just growing breasts and getting their periods while boy's genitals grew pretty much on command which resulted in some boys having tennis ball sized jewels while their members became a foot or two long as the boys touched them. Jake then decided to set his body at soccer ball jewels and have a three footer, immediately he jizzed and so did everyone else around, it was like there was a set time for that and everyone was synced to it, the best part was only their genitals got older than five, nothing else about them did which is when....