That Time I Got Reincarnated as a Slime season 3 episode 12: Rimuru begins the Founder's Festival's preparations

That Time I Got Reincarnated as a Slime season 3 episode 12, titled The Preparation, was released on Nippon Television in Japan, on Friday, June 21, 2024. The episode saw the beginning of the Founder's Festival arc's adaptation, with Rimuru Tempest preparing for the event.

The Demon Lord conversed with his acquaintance, Mjöllmile, the merchant, about what sort of things he should do in Jura Tempest to make the event standout. During their conversation, Rimuru and the merchant exchanged interesting ideas.

For instance, he saw the vision of making a giant arena in Tempest to ensure entertainment for the guests. Interestingly, That Time I Got Reincarnated as a Slime season 3 episode 12 focused on Rimuru going about the festival's preparations. As such, it was a dialogue-heavy episode.

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That Time I Got Reincarnated as a Slime season 3 episode 12: The Founder's Festival's preparation begins as Rimuru contacts Yoshida

That Time I Got Reincarnated as a Slime season 3 episode 12 kicks off with everyone at the Jura Tempest working tirelessly for the Founder's Festival, especially with the date being decided. Rimuru reveals that each of the executives is set to announce unique projects they are in charge of.

Gabiru and Vester plan on holding a presentation of the historic healing potions they worked together to improve. Vester assures Rimuru that all the crucial information will be kept a trade secret. He wants to attract interested researchers to gather more collaborators.

Gabiru in That Time I Got Reincarnated as a Slime season 3 episode 12 (Image via 8Bit)

Following that in That Time I Got Reincarnated as a Slime season 3 episode 12, Rimuru returns to the mansion, where Shion appears in the hallway. She tells the slime to look forward to her project. Veldora too is excited about holding a teppanyaki booth using his Dragon Breath.

Meanwhile, Shuna requests Rimuru Tempest to assist her with her project. She wants the slime to take her to the Engrassia. That Time I Got Reincarnated as a Slime season 3 episode 12 then shows Rimuru meeting Yoshida, another otherworlder, known for skills as a patisserie.

Shuna, Rimuru, and Yoshida in the episode (Image via 8Bit)

He requests the patisserie to come to the Jura Tempest to help them out with his skills. While Yoshida would love to go, he reveals that he cannot leave the place. Shuna then implores him to reconsider.

In the end, Yoshida tells Rimuru that if they want to convince him, they should show their skill in the kitchen. That Time I Got Reincarnated as a Slime season 3 episode 12 then shows Shuna preparing a delicious meal to win Yoshida's heart. He agrees to offer them a "special service."

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That Time I Got Reincarnated as a Slime season 3 episode 12: Rimuru discusses Founder Festival's plans with Mjöllmile

After convincing Yoshida, Rimuru Tempest decides to go to the Kingdom of Blumund to meet Gard Mjöllmile, the merchant, and seek his help regarding the Founder's Festival. However, before that, That Time I Got Reincarnated as a Slime season 3 episode 12 shows Mjöllmile engaged in a business deal with lord Cazac.

However, he doesn't like Cazac's idea of opening a new shop using an Elf slave. While he wants to reject his request, he cannot find a proper excuse until Rimuru's arrival. Cazac belittles Rimuru, giving Mjöllmile an opportunity to cut off the ties with him.

Cazac and Rimuru in the episode (Image via 8Bit)

Following that, That Time I Got Reincarnated as a Slime season 3 episode 12 shows Rimuru Tempest asking Mjöllmile to assist him with the fast food expansion project in Jura Tempest. He requests the merchant to give him five of his best employees to work with Veldora.

Mjöllmile says they may not work at their optimum best due to the fearsome aura of Veldora, but he accepts Rimuru's request since he once saved his life. At the same time, Rimuru wants Mjollmile to give him some ideas to make the festival spectacular.

He wants something to serve as the nation's main attraction. Rimuru reveals in That Time I Got Reincarnated as a Slime season 3 episode 12 that he plans on turning the town into a health resort. While the town already has a hot spring and a lounge area, he feels it's lacking in the entertainment department.

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

To ensure everyone gets to equally enjoy their stay, he wants to offer a tour of the Jura Forest with a proper guide. Additionally, the slime thinks of organizing events, such as Fishing Tournaments at the mountain stream and hunting events to turn first-time visitors into repeat visitors.

Impressed by Rimuru's wide vision in That Time I Got Reincarnated as a Slime season 3 episode 12, Mjöllmile informs him about the popular theatre in Engrassia, where operas and stage plays are held every day. They also organize fighting tournaments at the arena. Rimuru suddenly remembers Hero Masayuki gaining immense popularity in Engrassia.

He likes Mjöllmile's idea and plans to create an opera house in the town. He asks the merchant to look up the stuff needed to hold a show. Rimuru then reminds Mjöllmile that the fest's purpose is to welcome world leaders and the general public.

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

As such, he plans to build a colosseum, with a capacity of 50,000. There will be sections for the nobles, who prefer to watch tournaments at their leisure. He feels the entire ground must corroborate every spectator's needs.

Following that in That Time I Got Reincarnated as a Slime season 3 episode 12, Rimuru and Mjöllmile converse more, making the festival and the town a special one for the visitors. The Demon Lord also asks the merchant to join him as a high-rank executive in the town after the festival, which he gleefully accepts.

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That Time I Got Reincarnated as a Slime season 3 episode 12: Rimuru invites Fuze to the festival

After discussing the festival and the town's future plans with Mjöllmile, Rimuru Tempest goes to Fuze, the Guildmaster of the Free Guild's Blumund branch. The Guilmaster apologizes to Rimuru for everything regarding the Seven Days Clergies.

However, the slime assures him that he doesn't have to worry anymore. The Demon Lord then invites Fuze to Jura Tempest to attend his Demon Lord coronation ceremony and asks him to hand over an invitation letter to the King of Blumund.

Fuze and Rimuru in That Time I Got Reincarnated as a Slime season 3 episode 12 (Image via 8Bit)

During their conversation, Fuze reveals that Yuuki, the Grandmaster, has been concerned about him. Rimuru feels he must thank him somehow for everything that he has done and wonders if he should invite him as well.

Rimuru then writes a letter and asks Fuze to deliver it to Yuuki. He also tells the Guildmaster that Milim will be attending the event, which sends shivers down his spine. That Time I Got Reincarnated as a Slime season 3 episode 12 ends with Rimuru leaving Fuze's office with a gleeful smile.

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