It's out people!!!
Sorry for the late publishing, and I only published prologue for now.
I have been so stressed lately and I hardly write anymore, but I'll not give up.
Agn, I'm terribly sorry for the late update.
![](https://img.wattpad.com/cover/218201508-288-k528277.jpg)
YOU ARE READING
My Boss Is A 1000Years Old Demon Lord|| Muzan X Mitsuki|| Kimetsu No Yaiba
Horror*** So this is basically an alternate story about Muzan and the heroine I made up, Mitsuki. I'm so sorry for any mistakes, cause I suck at writing. *** Both of them used to know each other when they're young. A 15 years old Muzan fallen in love with...