Reborn as Shinobu Kocho: From the Start, I Tame Doma as a Demon Pet

[Reborn + Corruption + Demon Pet System + Controlling Upper Moons + Betraying Muzan]

I was reborn as Shinobu Kocho, only to have Doma crush my bones and inject me with poison in the Infinity Castle.

On the brink of death, I activated the Demon Pet System. The first thing I did was bind the Upper Rank Two standing before me.

"Doma, kneel."

The arrogant leader of the Paradise Faith slammed both knees to the ground like a loyal hound, smiling at me with hollow devotion.

When the Serpent Hashira, Iguro, arrived, he saw Doma letting me hold my blade to his neck.

When Kokushibo demanded an explanation, Doma smiled and pointed his ice fan at his fellow demon, Akaza.

When Muzan ordered him to kill me to prove his loyalty, Doma turned around and plunged his poison-coated golden fan into the back of Kibutsuji Muzan!

"Because I've found a light worth following even more, Lord Muzan~"

From then on, the Eternal Paradise Faith became my purse, and Upper Rank Two my sharpest blade.

I controlled him to save the Flame Hashira, who was destined to die, and change the outcome of the final battle.

The Hashira saw me as a heretic fallen into darkness, while Kanao looked at me with fear and sorrow.

They didn't understand.

In this life, I was willing to be stained with every kind of filth and wield demons as my blade.

"My name is Shinobu Kocho, the Demon Slayer Corps' last Shadow Hashira, and the 'master' who will end every nightmare."