Ultraman: I Become the Original Noah from the Start

(Fake lawful neutral, no System, no female lead, no saintly protagonist, overpowered protagonist, anime crossover)

A bewildered boy transmigrates to another world. Is he the boy chosen by the light? Can he protect the entire universe? Certain strange ideas may give rise to something entirely different.

Good and evil may simply be a matter of perspective.

But the boy who slays the dragon will one day become a dragon himself.