you were in your mother's womb, with a weird defect. You have been growing a weird second body inside yourself, eventually splitting off of you.

a year later, you discovered that you still control the twin that came out of you while you weren't born yet. this is unexpected to you, but you decide to go along with it anyways. (what i mean by controlled< is that the twin's consiness only consists of the main body's consiness, or your's. S basically, you can see out of 4 eyes, feel out of two bodies, hear out of two bodies, and speak out of two bodies.)

A long while has passed, and you and your "twin," (which is just you,) are now 32.