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sin 七つの大罪
The prideful archangel Lucifer disobeys God and is cast into the lowest level of hell as a fallen angel. On her way to hell, Lucifer happens to meet a high school girl on Earth named Maria, who helps her. In hell, Lucifer meets Leviathan, and Leviathan explains to Lucifer about The Seven Deadly Sins, the seven demon king rulers of hell. After The Seven Deadly Sins seal Lucifer's powers, Lucifer goes on a journey with Maria and Leviathan to defeat them.
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.
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.
Lucifer, Maria, and Levi head towards Miami in search of a Mortal Sin that Maria has detected. Lucifer is now weaker after her fight with the Sins and has decided to take on each Sin, one by one. Lucifer is calculating the best way to fight against the Demon Lord of Lust, but Levi wants to do things her way, only for her to succumb.
The gang travels to London to face another Mortal Sin, the Demon Lord of Greed. Maria finds a strange shop that sells a potion that purports to grant anyone their wildest desires. Lucifer makes haste to the shop's location, only for them to quickly fall into a trap, but will Maria and Levi be able to handle themselves once they're separated from Lucifer?
Astarotte, the Second Mortal Sin, is a net idol with a decent following, but Lucifer is ready to take her on with her own performances. Lucifer has a different style than Astarotte, starts to outshine Astarotte. As the crowds get bigger, and more is on the line for both Demon Lords, just who will come out on top?
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?
Beelzebub, the Sixth Mortal Sin of Gluttony, is running underground eating parties when Lucifer decides to crash one of them. Beelzebub is challenged to an eating contest by Lucifer, but when they both eat as much as they can, Lucifer becomes ill and ends up in the hospital. Her magic should prevent her from getting sick, but she's severely weakened. Will her time in the hospital bring her some humility?
Satan, the Demon Lord of Wrath, plans on stopping Lucifer once and for all. She sets off for Earth to retrieve Beelzebub and defeat Lucifer. Lucifer is significantly weaker than Satan, but plans on accepting her challenge anyway. Maria watches from afar and tries to remain faithful to Lucifer, and Levi struggles against Satan. How will Lucifer overcome her final obstacle, and what will happen to the others?
After taking down each of the Mortal Sins, Lucifer returns to the Gates of Hell as a true Demon Lord with millions of followers. With little time, she must make her way to the throne and save Maria. That is, if she can survive the ferry ride!
With big plans to swap Heaven and Hell, Lucifer makes her way through the Circles of Hell. Meanwhile, though Belial has the Mortal Sins on her side, she’ll make them pay for their betrayals! With her cruel torments, will she make them submit?
Captured by Belial, Lucifer takes hit after hit in order to get the answers she seeks. But instead, she learns that Belial is a fallen angel. Cast out by Lucifer, Belial has held on to her grudge and plans on finally exacting her revenge-by using Maria!
It's Heaven versus Hell in this final showdown! Unable to deal with Heaven's betrayal, Belial attacks the angel Michael before being cast to Earth. Bearing the Demon Lord title, Lucifer and her Mortal Sins wage war against the angels.
