Husband, Be A Gentleman - Chapter 23.1

Level 1 civilization is a mechanical hunter

The second civilization is the Zerg fusion

Level 3 civilizations are interstellar nomads

The fourth-level civilization is the fusion ascender

Level 5 civilization is a blade changer

Sixth-level civilization is the ancient savior

Level 7 civilizations are giant builders

Eighth-level civilization is a wonder seeker

The ninth-level civilization is a natural disaster opponent

The past dominated the virtual world

The future is the creator of cosmic utopia

- Description from novelbuddy

The eldest son of the assassin aristocrat Tuatha Dé.

The skill, experience, knowledge of the previous life, magic, all of which grows his power as an assassin.

Excellent assassins pass through. He was usually admired as the ideal lord, and behind it wielded a blade as an assassin aristocrat.

It was in the year 2800 of the Midgard calendar. Back then, there was a Overlord who once reigned supreme and had reached the very brink of subduing the world.