I am, Flame-Chaser of Previous Era - Chapter 39: Tool

Kiro is a slave branded with a deadly collar, forced to work in brutal mines under the ruthless Kargal Empire. Each year, slaves are hunted for sport in the deadly Hunting Games—a fight to the death on a savage alien moon. This year, Kiro is chosen to play. Sent into a wilderness filled with monsters and traps, survival seems impossible. But something ancient watches from the shadows—and it has plans for him.

One of the four greatest braggarts in the web novel circle, Zhang Xuan, has entered the 【Source World】, a higher dimensional plane even above the Empyrean. With the complete version of the Library of Heaven’s Path that encompasses the capacities of the 【Heavens’ Imperfections】, 【Heavens’ Order】, and 【Heavens’ Nature】, he embarks on an adventure — showcasing his might — across the world! Searching for Fate, Resigning Oneself to Fate, Knowing One’s Fate, Commanding Fate... While all of you are still cultivating your fate, seeking fate, or borrowing fate, I, Zhang Xuan, already possess the ’Eternal Fate of the Heavens’!

The genius cultivator Lin Xuanzhi didn’t let down the world in his past life, yet he only betrayed a single Yan Tianhen.

It was only when he had been backstabbed and killed by his closest friends, teacher and fellow disciples that he knew what kind of unforgivable crimes he had committed.

After he gained the huge opportunity for rebirth, the Lin Xuanzhi who had climbed back up from hell swore to cherish the person that he had betrayed in his past life.

- Description from novelupdates

The maniac who was crazy about all kinds of fields such as military and steampunk had been reincarnated.

However, his father was King Sejong the Great?

The mania-wise king and his crazy maniac son.

Along with the ministers, and countless humans who were getting exploited.

Even today, the night of Joseon was filled with the light of overtime.