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.
Lucifer, or whatever, I alone
am enough to deal with you.
Luzifer oder wie du nun heißt,
ich komme mit dir auch alleine zurecht.
Lucifer, me basto para encargarme de ti.
Lucifer, me basto para encargarme de ti.
Je suis bien assez puissante
pour y parvenir seule.
Lucifer, o quale che sia il tuo nome,
io da sola basterò a sconfiggerti.
Lúcifer ou o que seja, eu sozinha 
sou o suficiente para lidar contigo.
Люцифер, или как там тебя. Я одна с тобой справлюсь.