Totsuka Maria was praying in a chapel at Seiseki Girls' Academy when a black cross comes falling from the sky. On that cross, was a fallen angel, bearing the sin of pride, Lucifer. Maria attempt to tend to the angel, but the floor falls out and she disappears. Lucifer finds herself in the depths of hell, and runs into the Demon Lord of Envy, Leviathan.
Humans can't see me.
Menschen können mich nicht sehen.
Los humanos no pueden verme.
Los humanos no pueden verme.
Gli esseri umani non possono vedermi.
Humanos não podem me ver.
Люди не могут видеть меня.