That Time I Got Reincarnated as a Slime season 3 episode 20: Shion and Shuna’s Concert Lights Up the Founder’s Festival

The Founder’s Festival, the 20th episode of season 3 of That Time I Got Reincarnated as a Slime, premiered on Nippon Television in Japan on August 30, 2024. The episode featured a celebration of the first day of the festival, where Rimuru Tempest and their companions were treated to a captivating concert planned by Shura and Sion.

Despite the dignitaries’ interest being piqued by Vesta and Gabiru’s unique research, Mjollmile later brought some bad news to Rimuru about the trade. However, after a deep discussion, Rimuru and the others reached a resolution. Undoubtedly, the 20th episode of season 3 of That Time I Got Reincarnated as a Slime has impressively set the stage for the Founder’s Festival arc.

Warning: The following article contains spoilers for episode 20 of That Time I Got Reincarnated as a Slime season 3.

That Time I Got Reincarnated as a Slime: Season 3, Episode 20 – The Concert Begins as Rimuru Receives a Surprise from Shuna and Sion

The 20th episode of That Time I Got Reincarnated as a Slime season 3 opens with the Class-S students gathering around Rimuru Tempest, having just discovered that he is the ruler of the nation. They inform the Slime that Ms. Tiss has fainted upon learning the same information.

Despite not having anyone to care for them, Rimuru believes that Hinata would make the ideal choice to watch over the children. Rimuru also reveals to the kids that Hinata was once a student of Shizu, just like him. Kenya and the others come to the realization that Hinata is the leader of the Crusaders. However, Hinata does not object to Rimuru’s request.

Hinata with Class-S students (Image via 8Bit)
Hinata with Class-S students (Image via 8Bit)

Instead, she requests that he care for Luminous, who has recently arrived at the Jura Tempest. The Demon Lord deems it more challenging than looking after children. The focus of That Time I Got Reincarnated as a Slime season 3 episode 20 then shifts to the grand auditorium, where Tact leads a stunning musical performance with the help of goblins and other residents of the nation.

Rimuru believes that the music is what has brought about the ideal balance between humans and monsters, a desire he shares. Out of nowhere, Shuna and Shion make an appearance on the stage. Rimuru wonders if this was the surprise they had planned for him.

Shuna and Shion in That Time I Got Reincarnated as a Slime season 3 episode 20 (Image via 8Bit)
Shuna and Shion in That Time I Got Reincarnated as a Slime season 3 episode 20 (Image via 8Bit)

The mesmerizing performance of Shuna and Shion is showcased in episode 20 of That Time I Got Reincarnated as a Slime season 3. Shuna impresses with her piano playing, while Shion enchants the audience with her incredible violin skills.

Despite Rimuru’s expectation for Shuna to shine, he is amazed by Shion’s ability to play the violin so beautifully. As the audience applauds their performance, the slime realizes the unifying power of music and art.

That Time I Got Reincarnated as a Slime: Season 3, Episode 20 – Gabiru and Vesta’s Research Shocks Everyone, Including Rimuru

Gabiru and Vesta (Image via 8Bit)
Gabiru and Vesta (Image via 8Bit)

Following the concert, the next event in That Time I Got Reincarnated as a Slime season 3 episode 20 is the science presentation. During this portion, Gabiru and Vesta deliver a lecture on their successful creation of a sophisticated extraction from Hipokute herbs, which effectively eliminates all impurities. However, as the dignitaries start to lose interest, Vesta suggests that Gabiru demonstrate the process to captivate their attention once again.

Gabiru confidently announces to the crowd that he possesses the knowledge and skill to mend a shattered sword using a healing potion concocted from Hipokute herbs. While some skeptics in the audience doubt the validity of his claim, Gabiru and Vesta’s successful experiment proves them otherwise.

Hipokute plants and normal plants (Image via 8Bit)
Hipokute plants and normal plants (Image via 8Bit)

Gabiru and Vesta’s natural curiosity led them to uncover the fact that Hipokute plants and regular weeds share a similar structure. The only distinction lies in the quantity of magicule present in the former. Rimuru remembers seeing a surplus of these Hipokute plants on one of Veldora’s dungeon floors.

Additionally, he understands that when an ore comes into contact with concentrated magicules, it transforms into magicrystals. Even though a sword does not possess a “soul,”it does contain magicules which allow it to be extracted. The distinguished guests are enchanted by this revelation and believe it should have been revealed at a prestigious institution.

Episode 20: Hinata, Yakisoba, and Luminous

Hinata, as seen in the episode (Image via 8Bit)
Hinata, as seen in the episode (Image via 8Bit)

In episode 20 of That Time I Got Reincarnated as a Slime season 3, the focus shifts to the town where Rimuru encounters Hinata and the Class-S Students. They share their delight in trying various delicious foods from the stalls, including yakisoba and hamburgers.

Hinata approaches Rimuru and informs him that Arnaud and the others urgently need to speak with him. In That Time I Got Reincarnated as a Slime season 3 episode 20, Luminous is seen applauding Rimuru for his excellent arrangements.

Luminous Valentine in the episode (Image via 8Bit)
Luminous Valentine in the episode (Image via 8Bit)

Enthralled by both the concert and the scientific demonstrations, she suggests a cultural collaboration between Lubelius and Jura Tempest. She proposes to teach Rimuru a special skill that allows the sharing of Holy powers with others, in return for allowing a group of vampires to reside at Jura Tempest and learn about science.

Rimuru wholeheartedly embraces the offer and is delighted by the skill bestowed upon him by Luminous. Subsequently, we witness the Demon Lord partaking in a feast with Hinata and Yuki.

Hinata, Yuki, and Rimuru (Image via 8Bit)
Hinata, Yuki, and Rimuru (Image via 8Bit)

In addition to praising the food, the Crusader’s Captain displays curiosity about Gabiru and Vesta’s research, as regular healing potions have no effect on her. However, Hinata and Yuki are somewhat taken aback that Rimuru allowed his executives to share this discovery with everyone.

Much to their astonishment, Rimuru Tempest reveals that he was not aware of their chosen research topic. Although he feels a hint of remorse, he is pleased that everyone is captivated by the project.

That Time I Got Reincarnated as a Slime: Season 3 Episode 20 – Mjollmile Brings Terrible News About Trade & Conclusion

Mjollmile gives Rimuru the news (Image via 8Bit)
Mjollmile gives Rimuru the news (Image via 8Bit)

In episode 20 of That Time I Got Reincarnated as a Slime season 3, the focus shifts to the mansion where Mjollmile informs Rimuru that they are facing financial difficulties in completing their trade. Mjollmile explains that despite having enough capital, they do not have enough tradable currency.

Based on information from episode 20 of That Time I Got Reincarnated as a Slime season 3, it is stated that only gold coins mined from the Dwarven kingdom are considered valid currency for trade. While some experienced traders may accept alternative forms of payment, the majority of small-scale business owners still prefer to use gold coins.

Shuna and Diablo suggest implementing their own rules on the neighboring nations by force, arguing that it would be their loss if they cannot trade with Jura Tempest. While Rimuru is intrigued by the idea, he is hesitant to cause harm to others.

Rimuru Tempest, as seen in the episode (Image via 8Bit)
Rimuru Tempest, as seen in the episode (Image via 8Bit)

In the meantime, Mjollmile informs Rimuru that they must settle their payment with the merchants within two days. Rimuru then suggests using the gold bars as payment, but Mjollmile is hesitant as he fears the merchants will view them unfavorably.

Despite the situation, Rimuru avoids dwelling on it too much and instead focuses on ensuring that everyone follows their own rules. He also encourages Mjollmile and the others to fully participate in the Founder’s Festival. As the Battle Tournament begins on the second day of the festival, That Time I Got Reincarnated as a Slime season 3 episode 20 comes to a close.

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