Demon Slayer: I Met Muzan and Became Upper Rank One

[Demon Slayer: Kimetsu no Yaiba + demon-side story + no System + female lead]

(The protagonist was male in her previous life. It’s just the author’s unusual preference, and doesn’t have much impact on the story.)

(The protagonist is unwaveringly loyal to Muzan and will never betray him.)

Do good deeds always lead to good outcomes? At least for Tsuruha Saori, they did not.

If the so-called gods could not give her what she wanted, then what was wrong with becoming a demon?

What is justice? What is evil? And who gets to decide?

Born into this cruel world, she would do whatever it took to live well.

As Yoriichi Tsugikuni’s disciple, and as the Demon King Muzan’s assistant.

As the former Upper One of the Twelve Kizuki, and as a friend to the Butterfly family.

As an enemy of the Demon Slayers, and as the one who brought the Ubuyashiki Family to an end.

She would live on, forever and ever.