It's the middle of winter, and the Devil King is training in the hopes of transitioning from part-timer to full-timer. However, his plan hits a road block when Emi's mother, Laila, informs Maou and the whole group about a crisis affecting all of Ente Isla. And his full-time job isn't the only thing that might be put on hold-Emeralda and Chiho are planning to throw a Christmas party for Alas Ramus's first winter holiday experience! On top of that, Rika's feelings for Ashiya remain, giving him pause about leaving Japan, and Urushihara couldn't care less about the past of the angels and the tragedy of the heavens. Are the visitors from another world really going to leave Japan for good?!

Do you want fries with your hellfire? Being soundly thrashed by the hero Emilia, the Devil King and his general beat a hasty retreat to a parallel universe...only to land smack in the middle of bustling, modern-day Tokyo! Lacking the magic necessary to return home, the two are forced to assume human identities and live average human lives until they can find a better solution. And to make ends meet, Satan finds gainful employment at a nearby fast food joint! With his devilish mind set on working his way up the management food chain, what will become of his thirst for conquest?!

Do you want fries with your hellfire? To fight Ignora, Maou's group must restore Devil's Castle to its former glory. However, because of his schedule at MgRonald, Maou needs to save time on his commute by staying in Japan. While he's stuck there, Suzuno, Laila, Albert, and Rumack travel to the Northern Continent to retrieve the Spear of Adramelechinus. Maou, unable to help them-and living the bachelor life, alone in his apartment for the first time-receives chocolate from a work trainee, but how will the other women in Maou's life react to that news?! The Devil King faces off against his next enemy: Valentine's Day!

THE DEVIL FINDS WORK FOR IDLE HANDS! MgRonald is closed for renovations, which means Maou is temporarily out of a job! His hunt for employment takes him all the way to Chiho's family farm in Nagano, where he'll get a taste of the agricultural life. Can he and the others survive their time in the sticks, or are they simply too spoiled by the city? And if Maou does learn the value of hard work, what of all the farms he trampled during his time as the Devil King...?

In this spin-off of the popular novel series, the Devil King Maou and Emilia, the Hero, are reincarnated after their terrible battle as high school students in modern-day Japan! Add in the innocent Chiho, a fellow student with a crush on the former lord of darkness, and you've got a high school comedy devilish in its scale!

Do you want fries with your hellfire? A portal opens in the courtyard of the Devil's Castle (a tiny walk-up). From it emerges a little girl who calls the Devil King "papa" and the Hero "mama." Ashiya and Chiho are shocked to discover that Maou and Emi had that kind of relationship, but nobody's more surprised than the two new "parents." Will Maou the breadwinner be able to make the grade when it comes to child rearing? And will this spell the end of the starry-eyed Emi's romantic ambitions?