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.
Ranked number one among angels.
Die Nummer Eins unter den Engeln!
Número uno de los ángeles.
Número uno de los ángeles.
Primo fra i cori degli angeli.
A número um entre todos os anjos...
Первая среди ангелов.