Demon Slayer: Bride of Muichiro

In another universe, Tokito Muichiro is an eighteen year old demon slayer, who unlocked his mark. Although this demon slayer marks grants him better agility, speed and strength it will cost him his life at age 25.

The Demon Slayer Corp master pressures him to find a bride, as it is one of the hashiras duty's to produce an heir to pass down their place in the Corp. Therefore Tokito is betrothed to a random strange woman who is his age.
What the Corp dosnt know, is that this woman has many dark secrets and abilities. She herself can overthrow the entire Demon Slayer Corp at her prime. Will she use this power for good?

@/coco_ii on twt - yn figure
@/Dal_li_0130 on twt - muichiro fanart