Fourteen-year-old Iruma Suzuki has been unfortunate all his life, having to work to earn money for his irresponsible parents despite being underage. One day, he finds out that his parents sold him to the demon Sullivan. However, Iruma's worries about what will become of him are soon relieved, for Sullivan merely wants a grandchild, pampering him and making him attend the demon school Babyls. At first, Iruma tries to keep a low profile in fear of his peers discovering that he is human. Unfortunately, this ends up being more difficult than he expected. It turns out that Sullivan himself is the chairman of the school, and everyone expects him to become the next Demon King! Iruma immediately finds himself in an outrageous situation when he has to chant a forbidden spell in front of the entire school. With this, Iruma instantly earns a reputation he does not want. Even so, he is bound to be roped into more bizarre circumstances. [Written by MAL Rewrite]

Kyou kara Maou! revolves around Yuri Shibuya, your average Japanese teenager. One day, Yuri sees a classmate being harassed by bullies. Thanks to this intervention, his friend is able to escape, but unfortunately Yuri becomes the new target of the bullies in the process and gets his head shoved into a toilet. But instead of water, the toilet contains a swirling portal that sucks him into another world, largely resembling medieval Europe. There, he is told that he will become the next Demon King due to his black hair and black eyes, traits only possessed by the demon's royal lineage. Yuri's arrival is met with some skepticism by some of the demons, who view him as unworthy to be their king. However, after Yuri wins a duel by utilizing his magical powers, the demons slowly begin to acknowledge him as their monarch. Yuri must now learn what it takes be a true Demon King, as he tries to keep the peace between demons and humans in this strange new realm.

It is summer break and Keima intends to spend all his time on video games. An old acquaintance, the timid girl Tenri, comes back into the neighborhood—and apparently has a lost soul inside her. It is up to Keima and Elysia to unravel the secrets of her heart. (Source: ANN)

It's been a year since the disappearance of Shiro, the Silver King; Kurou Yatogami and Neko have been diligent in their search, but to no end. Their investigation leads to a run-in with members of the now disbanded Red Clan HOMRA—Rikio Kamamoto and Anna Kushina—being pursued by the Green Clan, who desire Anna's powers for their own ends.

Now, the members of Scepter 4 are called upon alongside Kurou and Neko in order to rescue Anna, the mascot, and only female member of the ruined Red Clan, from the enemy's clutches and hopefully find Shiro using the young girl's powers. Amidst crisis, the group is forced into a power struggle when the Green Clan threatens to overtake the Gold King's domain.

The second step in the K Project series, K: Missing Kings, continues the story of a young boy caught up in a psychic war between seven kings, and showcases each character's struggles after the losses of their respective Kings.

[Written by MAL Rewrite]