I'm a Man-Made Ultraman, and from the Start, Noah Has Me in His Sights

This is not a transmigration story, I repeat, not transmigration! But there is a System. The System doesn’t have much presence and only appears when the protagonist levels up.

Kars has always wondered where he came from and what the meaning of his existence is.

Ever since he awoke in the laboratory, this question has haunted him.

With this question in mind, he begins wandering through different eras and worlds, searching for the meaning of his existence.