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.