The King of Asgard

The protagonist travels to the Marvel universe, becoming the eldest prince of Asgard, obtaining the template of 'King Gilgamesh', and having twelve Gold Saints serve under his command.

He established the twelve zodiac signs and took charge of Valhalla.

Facing his sister Hela, Thanos, the head of the family planning office, solemnly declared: This is the king's domain, and it is not for ants to bark and howl!

[Inspired by watching the movie 'Legend of Sanctuary', since Asgard has both a Sanctuary and Valhalla, I'll just add them all. This is an invincible novel, so please don't be offended if you don't like it.]