I Signed My Name on Miss Satan's Back

Naiis is a notorious inspector in Hell, and the things she gets up to make all of Hell wonder how she's still alive. She got Satan to sign off behind his back, faked worship before Pride, showed off shamelessly in Envy's face, pretended to be above it all in front of Wrath, worked hard right beside Sloth, stayed disciplined at Greed's side, preached frugality to Gluttony, and slept with Lust. Ask who's the boldest in Hell? It's Nai the Scoundrel, right at Hell's gates.

(PS: Lady Satan is a girl, and the Seven Sins are all girls.)