Kill the Demon Lord

My name is Jue Ming. My master, Wu Ya Zi, said it was the name of a Chinese medicinal herb, symbolizing light and hope, just like my birth and my mission.

I was only twenty-one when I killed the demon lord.

My master told me the demon lord had committed countless atrocities and brought harm to the people, defying the laws of Heaven. He had to be killed.

So I took his words to heart and did just that. What I never expected was that it would give rise to a heart demon within me.

Of course, heart demons aren't anything to fear. Cultivation isn't complete without vanquishing one. But what if that heart demon has the demon lord's face?

Master, wherever you are in the underworld, could you sit up for a moment and tell me how to deal with this?

[Content warning]

1. The protagonist is the gong and the villain is the shou. Gong-centric story, with an older protagonist and a younger love interest.

2. A savior-and-world-destroyer setup, beginning when the protagonist is a child.

3. Third-person narration.

Theme: Take your fate into your own hands.