The Demon Lord and company venture to the human slave market within Hellion territory. Amid the battle to free the captives, the high-ranking devil Allit appears, seeking a rematch with the Demon Lord and mentioning an “Armageddon to come.” Conflict in Hellion Territory and the mysteries of this world thicken...

The Demon Lord continues his adventure in this re-vamped series! After encountering the mysterious entity in the lowest level of the Bastille Dungeon, he sets out for Hellion Territory, where Grand Devils vie for domination of the realm. With the addition of a new advisor—the (seemingly) hopeless optimist Akane—the Demon Lord’s army grows even more colorful, and their hijinks even wackier.

En route to Hellion territory in search of answers, the Demon Lord and company explore Animania and encounter its wild inhabitants. Meanwhile, Luna learns that her best friend is among a shipment of slaves being transported to Hellion territory by the powerful and theocratic Tzardom of Light. She rushes North to save her, where the Northern Nations are entangled in an age-old war.

Kaito Sena's life hasn't exactly been easy. Unfortunately for him, death isn't about to get any better. Summoned by none other than Elisabeth Le Fanu, the "Torture Princess," Kaito has to choose what he wants for his second life-be her butler, or die a long, painful death by torture. What is he to do but become her servant...and help her eliminate the fourteen ranked demons wreaking havoc in the world! See the original light novel come to life in this gritty manga adaptation!

With the leaders of Holylight under his thumb, the Demon Lord decides to summon yet another member of the Sleepless Castle: Ren Miyaoji, Akira Ono’s most beloved advisor. After a brief reunion, they travel to Euritheis, where the mafia-owned company Jack of All Trades reigns with drugs, gambling, and human trafficking. The Demon Lord, the walking embodiment of hijinks, soon draws the attention of this company, and then...

Having defeated the high-ranking devil Allit, the Demon Lord and company set off for Hellion territory, leaving chaos in their wake. There, Olgan’s father—the grand devil Belphegor—captures her. To save her from him once and for all, the Demon Lord storms into the grand devil’s sanctum!

There's no rest for the wicked, even a not-so-wicked Demon Lord. As Rabbi's hot spring prepares for opening, Akira begins wooing the right nobles and summoning extra assistance - but is it enough to win over the Madame? After all, keeping up operations devours cash and that means grinding away on quests and baddies, even while simultaneously trying to keep overeager adventurer Yukikaze from grinding away as well. You may have to think big to be big, but for Akira, being big enough is definitely not the problem...