You we're once human.. you "we're"... now, your on the demon's side. You fell into their trap, accidentally.. your blood mixing with Muzan's.

You stll remember your human life. You aren't under Muzan's curse... a miracle it seemed, but it was absolutely torture for you. Demon slayers, again and again.. forced to be seen as a villian.

Till you met one particular demon slayer. Muichiro Tokito. He spared you, not sensing a single act of evil around you. Each night, both of you would go somewhere, together, where you can take a break from the world.

That all changed till the war began, someone found out.. like any normal demon slayer, of course they would snitch... one last night before slaughter came.. you spoke

"Our love is forbidden..."

Hours passed, dawn broke, you hid again. Away from the sun. Away from them, once night came... the slaughter will come.. soon, enough. It will.