Move your spirit inside the sister's womb

From Create Your Own Story

You leave the boy and enter the girl's womb. You watch a sperm unite with an egg. Pregnancy has occurred! You take possession of the rapidly growing mass of cells. You stay with the embryo as it develops into a fetus. You intend to be born with it, an evil baby who will be bring terror and misery into the world.

But before then, you have a chance to tweak the body's development.

Do you:

• Grow a penis
• Grow a pussy
• Grow both

You are possessing:
Fetus