Lucifer is now up against the Demon Lord of Sloth, Belphegor. Belphegor gathers her followers online, working with Mammon. Belial asks Belphegor to put an end to Lucifer once and for all. Lucifer ends up getting sucked into Belphegor's game, along with Maria and Levi. With a battle for the virtual world ongoing, and tensions building between Maria and Lucifer, just what will happen?
Hero Maririn, I'm sure you 
can defeat the Demon Lord.
Heldin Maririn, du kannst
den Dämonenfürsten besiegen.
Heroína Maririn,
estoy segura que puedes vencerla.
Heroína Maririn,
estoy segura de que puedes vencer.
Héroïne Maririn,
Valorosa Maririn, sono sicura che tu
sarai in grado di sconfiggere il Demone Supremo.
Heroína Maririn, tenho certeza que 
consegue derrotar a Rainha Demônio.
Герой Марилин, теперь ты точно 
сможешь победить демона!