Isekai

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 is 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 crew member of a pirate ship that is going to sink soon e) As a ghost trapped by a necromancer for his next project f) As a stray cat g) As an injured criminal currently hiding at a cave h) As a skeleton mob in a vast dungeon i) As a captive in an alien spaceship somehow in a fantasy world j) As a lowly goblin of a goblin tribe, but the goblin slayer is here x) Extremely Chaotic Randomizer

Or, dive into your own fantasy.