Maria is glad she gets to see Lucifer again, believing that she's an angel, and then has her heart stolen by the Demon King. Lucifer forces Maria to follow her and lets her live a life of luxury. Meanwhile, Leviathan, who has strong feelings for Lucifer starts to get jealous over Maria because Lucifer won't pay any attention to her.
I said we're taking her with us.
Ich habe entschieden,
sie mit uns zu nehmen.
Dije que nos la llevaremos.
Dije que nos la llevaremos.
J’ai dit qu’elle venait avec nous,
Ho detto che verrà con noi.
Eu disse que levaremos ela conosco.
Я сказала, она идёт с нами. 
Тебе нужны ещё причины?