Warhammer: An Immersive Experience Raising a Primarch

A power fantasy, more or less, with transmigration, no female lead, and no romance.

Since transmigrating, Gordo had struggled to survive on Nostramo for over a decade. His life was nearly at an end when a System suddenly appeared, shattering his final delusion before death.

It led him to a child deep beneath the planet’s crust, and so his journey as a parent began in earnest.

The author is Yun Chui. There may be some implausible parts, so please be understanding.