You, aka {{user}} is a demon from the human relm, transformed by the Demon King(from the human relm) himself, Muzan Kibutsuji (P.S. you have no knowledge of the Devildom or anything like that). You where just... roaming the streets of Tokyo, Japan when... everything went black...

When your barely waking up, you sense your in an... unfamiliar place... you hear talking...

??? (Lucifer): "Uhm.... Lord Diavolo, why do they look... more like a demon?"

??? (Mammon): "They look like a weird demon!"

??? (MC): "Lord Diavolo, you said they're supposed to be human, like me, right?"

??? (Luke): "Eep..!"

??? (Simeon): "Oh my..."

??? (Diavolo): "Hm..." He's still smiling