Uchimura Denosuke is your normal, everyday salaryman trying to climb the corporate ladder. But then he's summoned to a terrifying fantasy world by the Demon Overlord, who offers him a new job--as one of the Heavenly Kings in his army, with full benefits! Uchimura may not have muscles or magic, but he does have an office worker's skills and savvy. Will they be enough to keep him alive?

The Fifth Calamity is defeated thanks to the joint efforts of Rex and Legion, and East and West Sylvania are finally reconciled. The Anti-Calamity Alliance is successfully formed as well, and Uchimura and company can breathe a sigh of relief. However, upon their return to the Demon Kingdom, the Great Calamity already appears to be exhibiting signs of revival. The Demon Overlord reveals a major secret. Struggling with the pressure, Uchimura relentlessly throws himself into work as if to esc...

When Uchimura Denosuke agreed to take a job in the Demon Overlord's army, he passed his first test with flying colors--despite being a normal human. But when his new boss asks him to resolve a magical dilemma, Uchimura's office skills may not be enough. Can an ordinary salaryman keep up with the demands of being a Heavenly King?

Uchimura tried to negotiate a deal with the Merchant's Guild to solve the post-calamity food shortage, but his attempts were all foiled by the wicked Viper and his tricks. Determined to turn the tables, Uchimura pulls out the aces up his sleeve: a former enemy and a frail young girl with the courage to come forward with the truth. "By the power invested in me as a Heavenly King for the Demon Army, you're under arrest." Viper finally faces the hammer of justice--only for the Demon Army to f...

Uchimura and his companions have overcome a series of dangerous challenges to free Kuryuu from the grip of an evil tyrant, stop an impending Calamity, and achieve their ultimate goal of rescuing Ulmandra. However, any hope of downtime upon their return to the Demon Kingdom is short-lived. The Holy King of Starfrost warns them of multiple Calamities occurring simultaneously and calls for an alliance to confront these threats.Tasked with spearheading this effort, Uchimura is dispatched to th...

To stop the vile tyrant Buzzan from forcing Ulmandra to be his bride, Uchimura teams up with Ulmandra's older brother, Vahn. They infiltrate the wedding, but Vahn's attempt to assassinate Buzzan takes an unexpected turn. Angered by Vahn's betrayal, Buzzan calls for his execution. Will Vahn's carefully laid plan for revenge and his faith in Uchimura pay off? Or will it all come crashing down with the sudden appearance of a deadly new Calamity in Kuryuu?

Uchimura embarks on a perilous journey with a small band of the Demon Kingdom's finest warriors to rescue Ulmandra, who's been kidnapped. They attempt to infiltrate the castle disguised as a traveling group of merchants. Their plan is quickly thwarted, though, by non other than Ulmandra's kidnapper--the dreadful Van! "He'll come to us." In dire straits, Uchimura comes up with a peculiar plan that just might be crazy enough to work!

The mighty Demon Army is facing a ferocious wyvern attack! But the true threat comes from deep divisions that are splintering the army. It's up to Uchimura, a human recruited into the Demon Army's Big Four, to use his office skills to heal the divisions and unite the Demon Army against this calamity.

Salaryman-turned-heavenly king Uchimura leads the Demon Army against a horde of invading wyverns. The army struggles valiantly but is overwhelmed by the appearance of a titanic dragon—that is, until the Demon Overlord arrives. After dealing with this threat, the Demon Overlord makes the following unexpected announcement: “You, Uchimura, shall become the next king of the Demon Army!!”While striving to deal with this unexpected promotion, Uchimura heads to his next mission, where he faces a ...

A new mission unfolds for our heroes in the snowy Sylvanian Empire! Caught in an avalanche, buried in snow and unconscious, Uchimura is rescued by the two demihumans Kloos and Geim, who bring him to Azack, a mining village in the Old Sylvanian Territory. When Uchimura regains consciousness, Kloos is impressed by his unique perspective and personality, and seeks his help to tackle a big challenge facing Sylvania: "Uchimura! I need you to save this village...no, this entire country!"Meanwhil...

Uchimura and company, who are visiting the Royal City of Old Sylvania, are astounded to discover the true identity and hidden power of their guide, the demihuman Kloos. But just as Kloos declares his intentions of preparing for battle with the Calamity, said Calamity emerges! Legion, the Queen of Autavia decides to meet it head on."Come to me, my secret weapon, the strongest blade."What Legion summons is none other than a giant ice statue that resembles her elder brother Rex from days long...

Itsuki, Hayato, and their entourage of lovely ladies have finally arrived in the royal capital. Their mission? Secure a Miracle Drug to restore party member Chris's injured eye. Before they do, Istuki and the gang decide to do some sightseeing and pay a visit to the grand cathedral, a popular tourist attraction. There, Itsuki is shocked to find that this cathedral's nuns are more interested in partying than praying! Later, when he and Hayato attend the auction for the Miracle Drug, they en...