Episodes

After saving his city and inhabitants, Rimuru brings back a very important figure to the people of the Great Forest of Jura. The end of the war between Falmuth and Tempest leads to the next step: reorganizing forces and treaties. || A feast is thrown to celebrate the revival of Tempest`s fallen and the return of Veldora. After enjoying a brief, peaceful respite, Rimuru tells everyone his future plans: he`s going to get the word out to the whole world that he`s a Demon Lord and declare war against Clayman. Then King Gazel of the Armed Nation of Dwargon, Fuze of the Kingdom of Blumund, and Eren`s father, Archduke Elalude of the Sorcerous Dynasty of Thalion, all arrive in Tempest, and an important meeting to discuss the nation`s future begins. Source: crunchyroll

Although unforeseen, Rimuru opens a meeting with great leaders from various nations to discuss the steps that will follow the birth of a new Demon Lord. || As prominent figures from several nations assemble in Tempest for a meeting, Laplace and his companions formulate a plan centered around Clayman. Then someone familiar joins the discussion... Source: crunchyroll

After certain unforeseen events, the conference between monsters and humans continues and the leaders of the nations involved will know the steps that will follow the birth of a new Demon Lord and the return of the Dragon of the Windstorm. || Rimuru announces his plan to back Youm as the new king of Falmuth. After hearing this, Gazel tests Youm to see if he has what it takes to be a ruler, and Youm answers with full sincerity. Erald also takes a liking to Rimuru after hearing him say he just wants to create a world where everyone can prosper and smile. Thus Rimuru and his allies look ahead to the battle against their new enemy, Clayman. Source: crunchyroll

Ramiris finally exposes the dire news about Tempest's future, about which he came to warn Rimuru. The confusion is soon resolved, but the situation can be dangerous for other reasons. Everyone then comes together to try to predict Clayman's plans. || A new force has suddenly risen to power in the Great Forest of Jura, and its leader, Clayman, proposes that the Demon Lords hold Walpurgis with the goal of sanctioning the slime who deceived him. Rimuru also begins to prepare for a battle with Clayman, but observing the enemy army`s movements reveals that Clayman`s target is not Tempest, but Eurazania. Clayman`s army will arrive in Eurazania within two days. Can Rimuru`s forces get there in time? Source: crunchyroll

The announcement of the upcoming event that will bring together several Demon Lords serves as part of the plan to face Clayman. But before that, Rimuru must find a way to save the people of Eurazania, who have become the target of a diabolical plot by Clayman. || To put a stop to Clayman`s plans, Rimuru uses transport magic on a large scale to both move Tempest`s army to Eurazania and evacuate the people of Eurazania to Tempest. Rimuru also decides to crash Walpurgis, the Demon Lords` banquet, in order to settle the score with Clayman personally. Since this will be a return match for Shion, he decides to take her and Ranga along. New military forces are organized in Tempest in preparation for the battle against Clayman`s army. At last, the eve of battle is upon them... Source: crunchyroll

After sending his troops towards Eurazania, Rimuru needs to prepare for the Walpurgis, the great gathering of Demon Lords - and also for the confrontation with Clayman for what he has been doing. || Benimaru leads his army to Eurazania, and Youm heads to Falmuth to take it over along with his buddies and Diablo. Rimuru succeeds in outwitting Clayman by transporting all of Eurazania`s refugees to Tempest. Since Clayman has been striving to evolve into an Awakened Demon Lord for a long time, his resentment toward Rimuru grows. Meanwhile, Demon Lord Leon, Veldora`s sister Velzard, and Guy, the oldest of the Demon Lords, become increasingly impressed with Rimuru. Source: crunchyroll

Benimaru is in command of the troops that will face Clayman's army, which invaded the Animal Kingdom. If everything goes according to plan, achieving victory is just a matter of time. || Rimuru continues with preparations for Walpurgis, including making Treyni evolve into a Dryas Doll Dryad. Meanwhile, Benimaru and his forces have arrived in Eurazania via transport magic, and they promptly run Clayman`s army into a trap set by Geld. The Three Beastketeers, determined to rescue Carrion, set out to subdue the enemy army`s leader. Albis fights one-on-one with Yamza of the Five Fingers, while Phobio takes on Footman and Tear. Source: crunchyroll

Gabiru and the Three Beast Warriors battle Clayman's forces until they encounter formidable opponents. Benimaru will have to take action. || Gabiru narrowly wins his battle against Hermes. Watching their outcome is Middray of the Dragon Faithful, whose skill was enough to overwhelm even Suphia. Though he looks like a human, he is actually a Dragonewt like Gabiru. Meanwhile, Yamza uses his artifact Doppelganger to create a double of himself, but Albis still defeats him soundly. He tries to surrender, but Clayman takes control of him and forces him to transform into Charybdis. Source: crunchyroll

The long-awaited feast of the Demon Lords begins, and Clayman serves the first course: a hate-filled, accusation-filled speech to put Rimuru against the wall. || Clayman tries to convince the other Demon Lords that Rimuru should be purged, but Guy tells him that if he is truly a Demon Lord, he should defeat Rimuru himself. What should be a one-on-one battle between Rimuru and Clayman is joined by Milim, who has been brainwashed by Clayman, so Rimuru takes on Milim while Shion faces Clayman. But Rimuru is at a disadvantage against Milim and finds himself pushed back... until Veldora bursts onto the scene and takes Milim`s attack in Rimuru`s place. Source: crunchyroll

Veldora's sudden appearance surprises Rimuru, but this saves him from Milim's attacks. It's time to try to end the battle against Clayman. || Clayman and his pawns stand no chance against Rimuru and his allies. At a loss, Clayman orders Milim to use Stampede to kill everyone present, but Milim reveals he was never controlling her from the start. It was all an act to expose Clayman`s plans and identify the mastermind behind it all. Even Carrion is still alive and well. On the brink of death, Clayman uses the souls of everyone he has killed as energy for his awakening. Thus the final battle to settle the score between Rimuru and Clayman begins. Source: crunchyroll

Clayman awakened as a true demon lord. The fight between Rimuru and the puppet master continues, but the difference in strength is very evident. The battle and its aftermath bring profound changes to the Ten Demon Lords. || Rimuru backs Clayman into a corner trying to get him to reveal who he`s working for, but even on death`s door, Clayman`s lips are sealed. Left with no other choice, Rimuru finishes Clayman off. With Clayman dead and Carrion and Frey announcing that they`re stepping down as Demon Lords, the total number of Demon Lords including Rimuru is reduced from ten to eight. Guy coerces Rimuru into coming up with a new name for their group, and Rimuru`s solution is "Octagram," representing each of the Demon Lords as an eight-pointed star. Thus a slime became one of the eight Demon Lords, marking the start of a new age. Source: crunchyroll