Dance in Ash: Phoenix Wings (InosukexOC)

Akemi Saionji was born to be the perfect porcelain doll: beautiful, silent, and convenient. Her world was confined within the high walls of a wealthy estate and governed by the rigid rules of etiquette. But within her chest, a spark always smoldered, needing only a gust of wind to erupt into a wildfire.
A forbidden escapade into the night city and an encounter with the fiery Hashira, Kyojuro Rengoku, change everything. At twelve, she escapes her golden cage, trading silks for a Slayer's uniform and hairpins for a blade.
She must endure a year of solitude and despair in the wild forests before reuniting with her savior to become his Tsuguko. There, she will forge her own Breath of the Phoenix-a dance of death and rebirth. But is the refined aristocrat ready for the harsh sting of reality? And what happens when fate throws her together not with a noble prince, but with a wild, uncouth beast in a boar mask who turns her understanding of the world (and her patience) upside down?

//I do not own the world of Kimetsu No Yaiba, the rightful owner is Koyoharu Gotouge. This is fanfic, and the only characters I made are the ones introduced in the "OC" chapter//.