It's Actually Not Easy Wanting to be a Supporting Male Lead - Chapter 16 part4

In a world dotted with World Entrances to a demon world, demons have invaded humans for centuries. Humanity has united and one of the most ancient sects in the world, the Archean Mountain Sect, has set up an entire education system in the form of Dao Academies and defenses at the World Entrances.

Sky is not born of Shen Huan, millennium is like night.

This is a rebirth who wants to release himself, and has an interesting life story after getting a less serious system.

- Description from Uukanshu

Florentia was reincarnated as the illegitimate child of the richest family in the empire.

Lugh woke up to find that he had transmigrated to a hundred million years later.