Don Juan transmigrated to the interstellar era and became a poor boy burdened with a huge debt at the start.

In order to survive, they risked their lives to sign up for interstellar exploration.

However, he awakens the Super Interstellar Empire Expansion System and starts by gaining the allegiance of the tactical humanoid mechanical girl race!

It can also assimilate other races!

Good heavens! Don Juan exclaimed, "Good heavens!"

Interstellar Zerg? Assimilate them into mechanical Zerg girls!

A subspace demon? Let's become a mechanical demon girl!

A silicon-based mechanical empire? Pledge allegiance to me, and you too will become a mechanical girl!

A warp god?

Punch Khorne, kick Nurgle, infuriate Tzeentch, Slaanesh... emmmmmmm, better to just leave them behind...

Build an interstellar fleet from scratch! Create a super interstellar empire!

Han Huohuo traveled to the lord world, became a mountain king, and entered the scene with a terrifying SSS-class mecha workshop.

In the alien world with an ancient background, he began a bloody process of conquering the world.

How can a real man be depressed and live under someone else for long?

He should be decisive and ruthless, have unparalleled political power, and use his mecha army to flatten the alien world.

All the land under heaven belongs to the king, and all the people in the world are his subjects!