Saving the Galaxy from the Start

I came from ten thousand years in the future, and from the start I was saving the Milky Way!

Ding! The onboard AI has fused with the high-level System!

Choice One: One nano-scale, shape-shifting doll. Effect: Give you a childlike experience and the childhood of someone with countless dolls.

Choice Two: One neutron gun. Effect: In the Milky Way, once fully charged, this thing can blow up Earth with a single shot.

Why the hell would I need to choose? Haven't I had enough of being a kid already!

Need to steal crystals to keep saving the Milky Way?

Then what are we waiting for?

Let's steal the damn things!

A kingdom? Steal from it!

A sect? Steal from it!

"Our Hundred Flowers Sect will resist to the death!!!!"

Oh? This sect leader is pretty...

This novel and its characters are entirely fictional. Any resemblance is purely coincidental. Do not imitate.