The story so far—

In the MMORPG Cross Reverie, Takuma Sakamoto was overwhelmingly powerful, and was able to role play so well that his performances were more boss-like than the actual bosses of the game. For this reason, he came to be known as the “Demon Lord.”

By defeating the Demon Lord of the Mind, Enkvaros, faster than anyone else, he obtained the super rare item, the 《Demon Lord’s Ring》. It was one of the ultimate pieces of equipment in the game, able to reflect all types of magic.

Then, one day, Takuma found himself summoned to a world that looked exactly like Cross Reverie! Having performed the ritual magic at the same time, the Pantherian, Rem, and the Elf, Shera, fought over which one of them was his summoner.

But thanks to the Demon Lord’s Ring he wore, the magic was reflected, so the 《Enslavement Collar》 meant for him had clamped onto the two girls instead!

Faced with Rem and Shera arguing, Takuma was at a loss of what to do. While he may have been a superior player back in the game, he couldn’t talk with other people if his life depended on it. After struggling over what to say, the words that came out of his mouth were from the Demon Lord role play he had used in the game:

“Cease your pointless squabbling. You are in the presence of Diablo.”

Diablo soon after found himself foiling an invasion of one hundred Fallen, led by a Fallen named Edelgard, as well as an attack from within Faltra itself at the hands of the Fallen, Gregore. Diablo then later found himself the recipient of a quest from the governor of Faltra, Galford. Prince Keera of the Elven kingdom of Greenwood had demanded Shera be returned to him, threatening open war with Faltra should compliance fail. The details of Galford’s quest were simply to find a way to avoid the war. The bespectacled, straight-and-narrow Imperial Knight Alicia was assigned to the group as an observer to watch over their actions.

Using the 《Marionette’s Flute》, Keera manipulated Shera and unleashed a forbidden summon called the Force Hydra—yet Diablo still managed to rescue her.

After her rescue, the group set off to resurrect the Demon Lord Krebskulm, trapped inside Rem. But in the process, Krebskulm had lost a portion of her memories as a Demon Lord, being reduced to a biscuit-loving young girl, who was then nicknamed “Klem.”

Peaceful days passed by...

Suddenly, Alicia betrayed the group! Now awakened as a true Demon Lord, Klem went into a destructive frenzy. But thanks to one of Diablo’s ultimate spells and the sound of Rem’s and Shera’s voices, Klem was subdued and reverted to her biscuit-loving form. To ensure Klem would never go berserk again, Diablo bound her with the same enslavement magic afflicted upon Shera and Rem.

Through a string of coincidences, or perhaps God’s own guidance, Diablo found himself rescuing Lumachina, a holy woman, from the Paladin Gewalt. Being a High Priest, Lumachina was the highest ranking member of the church. However, due to her attempts at ridding the church of corruption and avarice, she was nearly assassinated. Still seeking to reform the corrupt church, Lumachina sought the help of the Paladin Captain Batutta, setting out to meet him in Zircon Tower.

Located in the perilous expanse of the former Demon Lord’s Domain, Diablo’s group of adventurers accompanied her as bodyguards. After a long journey, they arrived at their destination and were greeted by Batutta.

While there, Diablo claimed back his own dungeon, gained many pieces of helpful equipment and items, and fought off the new Demon Lord’s army, gaining new allies in the process: the Grasswalker, Horn, and the magimatic maid, Rose.

Shortly after, Horn decided to change classes and study to become a sorcerer, leaving for the magic academy.

But they could not celebrate their victories, however. Having been informed that the Elven king, Shera’s father, had passed away, the four traveled to her homeland where Shera was already engaged to a pig-faced Elf called Drango (for the sake of the country, of course). Diablo attempted to prevent the wedding, giving her a wedding ring and assuming the throne as the new king of Greenwood.

Afterward, to prepare for his upcoming battle with the Demon Overlord Modinaram, Diablo set out to meet the legendary swordmaster and level up as a warrior, only to find (to his great surprise) that the current swordmaster and heir to the previous was none other than a Dwarven girl called Sasara.

The previous swordmaster, revealed to be Sasara’s stepfather, Graham, sought to master the blade with such zeal that he transformed his body into that of an oni. But, despite his efforts, Sasara struck down Graham, proving once and for all her overwhelming prowess.

At the same time, the Demon Overlord Modinaram was marching its armies upon Faltra. The governor, Galford, and other adventurers, including Emile, were severely injured in combat. Diablo rushed to the scene and, with Rose and Sasara serving as vanguards, defeated the Demon Overlord. But Rem was then captured, and upon rescuing her, Diablo gave her a wedding ring.

News of the Demon Overlord’s defeat reached Lyferia’s king, Delouche Xandros, who ordered that Diablo be summoned to his castle.

“Laughable! If he wishes an audience, let the king come to me!”

Being too inept when it came to meeting important people, Diablo hid behind his Demon Lord-ly bravado to run away. Left with no choice, his wives Rem and Shera headed to the capital, Seven Wall, in his stead.

Diablo then learned from Rose that the rings he had given Rem and Shera were actually a pair, which meant he had unintentionally caused Rem and Shera to get married! Resolving to fix the situation before it came to light, he partnered up with the guildmaster Sylvie to visit the Viridian Cathedral.

Diablo reached the capital, and, after some misadventures, visited the sorcerer’s academy in order to resolve a mystery quest. He saved Horn from trouble and defeated the powerful monster that was summoned. But, just as he considered going back to Faltra, the captain of the Palace Knights, Maximum Abrams, forcibly demanded to escort Diablo to the castle. Leaving Sylvie and the others behind, Diablo boarded the black carriage.

“Hmph... Going to such lengths to call for me, I expect quite the banquet.”