Author's Note

Completed. ✔️

𝙺𝚒𝚖𝚎𝚝𝚜𝚞 𝚗𝚘 𝚈𝚊𝚒𝚋𝚊 𝚡 𝙼𝚊𝚕𝚎!𝚁𝚎𝚊𝚍𝚎𝚛

Kibutsuji Muzan has a son and his name was Y/n, A half-human and Half-demon who lived under Muzan's control.

There was no day where he's not being tortured by his Father, Ever since he was born he have conquered the sun something that Muzan couldn't and remained hidden in the darkness for all of his thousand of years living in this world. Muzan thinks of y/n as a weapon against the Demon Slayers, believing that Y/n will continue his legacy and will rule the word by being the most powerful demon that ever exist...or that's what he thought.

I do not own demon slayer nor the characters from the anime and the manga.

‼️SPOILERS‼️

There will be TONS of spoilers in this story, from the anime to the manga so BEWARE..