The next thing you remember it is waking up as a toddler with your brother. You remember your name Daniella and that your brother's name was Zach. Looking at your hand you see it's chubby although it would eventually grow slender and pretty. The room you are in is a white cube with a door you could open. Zach woke up and looked around at himself, the room, and then you. After a second a rush of memories come flooding in your brain and you remembered everything and then you also realized something. You both were naked however you weren't exactly ashamed by being seen naked by your brother, Perhaps it was because part of him was you and part of you was him.
Zach asked "Wha shoul we do Daniewa?"
you said "go thrugh the dor?" the two of you agree to go through the door with your lisps and on the other side of the door was a long hallway. As you were walking through the hallway you felt as if you were growing a bit bigger and decided to look at your body after having walked a couple yards you found yourself at 6 years old.
Zach said "We're growing up as we walk!"
"Yeah, I suppose we are getting a feel for our bodies quickly."
"True but I was always a guy... we'll besides directly at birth and at the end there but..."
"keep walking real guy. maybe soon your balls will actually drop."
you continued to walk and you found that the changes were fairly gradual, you kept growing along with Zach until you hit halfway through then ten years mark and then you abruptly stopped.
Zach asked "Something wrong Daniella?"
"My nipples are... they just felt strange for a moment... They still are a little sensitive but..."
"Your boobs are coming in, I'd guess you are about 11 or so, that was when my puberty came in. let's move forward!"
Moving forward felt very weird for you as parts of your body start elongating and growing. you still are a small in terms of chest and hip size but they are starting to grow and you feel them growing and then when you hit twelve years old you feel a wet sensation between your legs and see some blood.
"I dont feel any pain or anything there but..."
"let's keep moving... i'll just stand a little bit farther, don't want to get hit."
you kept moving and every few steps you bleed. You have reached the end of the hallway to come across more doors. Zach feel a little weird now, but you have adjusted to the weirdness. You open the door to find a room filled with many more doors. what will happen?