Description:

Mysterious invaders called the Septentriones arrive in Japan and begin attacking the country on a Sunday. To fight back, the heroes in Devil Survivor 2 signed a pact with the devil to become the Thirteen Devil Messengers. The Septentriones show up at least once a day and you have a time limit of seven days to defeat them. (Source: Megami Tensei Wikia)

Description:

Handsome and effeminate, quiet but proud, the sinister Akito Kobayashi has a passion for the occult and has developed a computer program to summon demons and the living dead. But little does he know that fellow high school students Kojirou Souma and Saki Yagami are reincarnations of powerful and benevolent spirits. When the pair's friends have become targeted by demons trying to harvest their life energies, they must harness their dark metaphysical powers to destroy Kobayashi's threatening program, or risk losing their loved ones forever. [Written by MAL Rewrite]

Description:

Neku awakens in the middle of Shibuya's bustling Scramble Crossing with no memory of how he got there. Little does he know, he's been transported to an alternate plane of existence known as the Underground (UG). Now an unwilling participant in the mysterious "Reapers' Game," Neku must partner up with a girl named Shiki in order to survive. Together, they complete missions and defeat monsters known as "Noise" as they gradually uncover the true nature of this twisted Game. "There's only one way to stay alive in Shibuya: trust your partner." Will they survive the Reapers' Game? (Source: Official Site)

Description:

Akira Fudo is informed by his best friend Ryou Asuka that the demons will revive and reclaim the world from the humans. As the humans do not stand a chance against the supernatural power of the demons, Ryou suggests fusing with a demon. Akira becomes Devilman, with the power of a demon and the heart of a human. (Source: MAL News)

Description:

Yuugi is a somewhat frail young boy who happens to be a big fan of gaming of any kind. But when he solves an ancient egyptian puzzle he is granted all the powers of darkness. Now when confronted with danger and injustice, he transforms into a much darker and dangerous form, and proceeds to dish out the justice and punishment for those who so richly deserve it. (Source: AnimeNfo)