Rem has been freed from the demon inside her, and Krebskulm--now called Klem--has entered the world in the form of an adorable little girl with an insatiable appetite for biscuits. But a Demon Lord still lurks within her, ready to awaken at any moment! What will happen if Klem is pushed to the breaking point? Are Diablo and his friends strong enough to stop her from destroying Faltra?

'" Takuma was just another awkward gamer, but a twist of fate sees him summoned to another world--in the body of a demon lord! And no one''s more terrified of the prospect than Takuma himself. He may have power, but he''s in way over his head. So he decides to pretend to be the monster he looks like, and accidentally winds up with a pair of gorgeous slaves: a voluptuous elf and cat girl. It''s not what any of them wanted, but they''ll have to figure out how to work together if they want to survive! "'

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...

SWEPT AWAY In order to cure the Marked Death Disease, Diablo must raid his own dungeon to retrieve a healing talisman from his treasure trove. But when lowly adventurer Horn is carried off by a raging underground river, Diablo must leap in after to save him! Meanwhile, Rem, Shera, and Lumachina continue on as planned, only to encounter a Black Dragon!

Diablo, Rem, and Shera have arrived at the Bridge of Ulug only to discover that an army of Fallen are marching towards Faltra! This should be no problem for a powerful Demon Lord like Diablo...except that Diablo is actually Takuma, a video game addict who's in way over his head. Will Diablo's stats hold up in a real-life battle?

CHAOS IN THE CATHEDRAL With Zircon Tower safe, Diablo and his crew turn their attention to the corrupt Cardinal Council. But danger lurks beyond the church walls, as Diablo realizes once again that not even powerful magic and enchanted gear can level up his ability to talk to girls.

Determined to raise his fighter class levels, Diablo overcomes the difficult trials set by the (supposed) Swordmaster Sasara. He becomes her disciple in no time, and is all set to undergo the final--but most grueling--challenge. Yet before the ultimate trial can even begin, the Demon Overlord Modinaram begins the invasion of Faltra, and our beleaguered party is attacked by...an Evil Ape?

The invasion of Zircon Tower heats up! Faced with the Fallen's overwhelming military might, the defenders of the city, led by Laminitus, seem to be cornered...until Diablo, his crew, and his powerful lightning magic appear! Decked out in new gear from his dungeon, the Demon Lord is ready for his comeback!

In Zircon Tower, Diablo and his companions have hit rock bottom. Batutta--the Paladin captain behind the frontier city's deadly outbreak of Marked Death Disease--has captured Rem and Lumachina, and plans to use them for his nefarious scheme. But when Diablo ventures underground to save them, Batutta deals a debilitating blow to his left arm. Severely wounded, and unable to use his most powerful magic, has Diablo finally met his match?

Diablo and his companions arrive at a Dark Elf village, searching for a magic ritual that can extract the soul of the Demon Lord sealed inside of Rem. They succeed in gaining an audience with the village's top-heavy chief, Rafflesia, but there's a problem. Shera is elven royalty, and a deep grudge persists between the elves and dark elves. If Diablo's party is to win Rafflesia's favor, they'll have to fulfill some very tough conditions!