Isekai Narrator

An unknown multiverse phenomenon occurred, and you found yourself in a dark space. You looked around and found a source of light in a distance. You approached the light and whoosh....
Choose your origin:
a) As a baby who just got birthed, your fate unknown
b) As an amnesic stranded on an uninhabited island with mysterious ruins
c) As an abandoned product of a forbidden experiment
d) As a slave being sold at an auction
e) Extremely Chaotic Randomizer

Or, dive into your own fantasy.