Demon Slayer: The Abyss of a Thousand Years

A Muzan fanfic. ⚠️ Muzan is the male lead, and the female lead is an original character. ⚠️ This is a pairing-focused story. ⚠️ The plot and ending have been changed. ⚠️ This book is told from the villains’ perspective, and the female lead is a villain too. If that’s not your thing, don’t read. ⚠️⚠️

Were there ever any happy moments in Muzan’s lonely, wicked life?

If fate had placed a vivid, lasting warmth by his side, might it have changed the final outcome, like the butterfly effect?

The answer is probably no.

And yet, in the end, there was a moment when he felt happy. His life was no longer defined by the words “emotions like an insect’s.”