AN EVENT OF MONSTROUS PROPORTIONS! The Tempest Founder's Festival is in full swing, with Rimuru and all the monsters under him keeping busy setting up the attractions. From live concerts to incredible feats of monster engineering (most notably, the massive dungeon), revelers are sure to have their minds blown. But all eyes are on the main event-the First Tempest Battle Tournament-and who should decide to participate but the Hero himself, Lightspeed Masayuki! What will come of his chance encounter with the demon lord Rimuru?

Lonely thirty-seven-year-old Satoru Mikami is stuck in a dead-end job, unhappy with his mundane life, but after dying at the hands of a robber, he awakens to a fresh start in a fantasy realm...as a slime monster! As he acclimates to his goopy new existence, his exploits with the other monsters set off a chain of events that will change his new world forever!

RIMURU THE DIPLOMAT At the suggestion of Demon Lord Carrion, Tempest and Eurazania have sent delegations to each other in the hopes of finding fruitful exchange. Benimaru leads the mission from Tempest, and from Eurazania is a party led by Albis the Golden Serpent. It seems as though trade might begin to flourish, until the members of Eurazania’s delegation bristle at Rimuru. Can our gelatinous hero manage to get on their good side and be the glue to form a friendly bond between two nations…?

Let the good times roll! It's festival time in Tempest, and this demon slime knows how to throw a party! After reconciling with Hinata and the Western Holy Church, Rimuru's pulling out all the stops to prepare a massive bash in his nation of monsters-with a little help from his many friends and allies! It's the perfect opportunity to debut his new demon lord title while showing the world everything the Jura-Tempest Federation has to offer. Will this big event go off without a hitch?

NO REST FOR A NATION-BUILDING SLIME! Now that Rimuru's monster-centric town has blossomed into a bona fide independent nation, it's time for his next step: build and maintain diplomatic relations with nearby countries! With a group of his trusty monster pals, Rimuru travels to the Beast Kingdom of Eurazania and the Dwarven Kingdom to meet with their respective heads of state and represent his domain as best as a slime possibly can. As if there wasn't already enough on Rimuru's mind, the otherworlder Shizu has been visiting him in his dreams, begging him to save her former students. Looks like that'll be another stop on this pliable pioneer's itinerary...

AN INSATIABLE GREED The Tempest Founder’s Festival was a roaring success, and after working out a few kinks, the Advanced Dungeon is proving to be a major Tempest tourist attraction. Now Rimuru’s next objective is to join the infamous Council of the West—however, a certain influential figure working from the shadows of the Council has no intention of allowing someone as powerful as Rimuru to take a seat at the table, and she will stop at nothing to quietly snuff him out before he makes any moves!

Framea and her party have descended into Tempest's underground labyrinth with the promise of great treasure not far from their minds. However, she's got another job-to write a strategy guide to help would-be adventurers navigate the many dangers of the dungeon!

ABANDON HOPE, ALL WHO ENTER HERE The Eastern Empire’s vast army (over 900,000 strong) is ready to invade the Forest of Jura. Thanks to Ramiris’s mind-boggling powers, Tempest’s entire capital-buildings, inhabitants, and all-has been evacuated into the nation’s labyrinthine Dungeon. While Primal Demons Testarossa and Ultima kick some serious imperial butt over on the front lines, the rest of the Empire’s army attempts to storm the Dungeon. Little does the enemy know, however, that they’re about to face a devastating bloodbath at the hands of Tempest’s own mighty forces...

A gutsy glob in crisis! News of the demon lord Clayman’s defeat by Rimuru shakes the Holy Empire of Lubelius to its core—especially since the chief knight of the nation’s Imperial Guard and captain of the Crusader forces, Hinata Sakaguchi, launched a bold attack on Rimuru not long ago. Things look only more dire when a priest sent by Rimuru to attend an urgent meeting of Lubelius bigwigs ends up murdered. The stakes couldn’t be higher for either side as Hinata heads to Tempest to settle things—one wrong move could spell total warfare!

Mind over body-and time!Having lost his deadly duel with Petelgeuse Romanée-Conti, Subaru Natsuki goes back in time once more. Before he even gets a chance to shake off the effects of the ferocious battle, he must use everything he has to foil the wicked plans of the body-hopping Archbishop of Sloth and his cultists. To save Emilia, who's holed up in Roswaal Manor after failing to persuade the villagers to seek shelter, Subaru will have to forge a whole new path with the finest of knights, the greatest healer, and the Sword Devil himself!