That Time I Got Reincarnated as a Slime: Season 3, Episode 17 – Masayuki the Lightspeed Hero’s Exploits Revealed

The newest episode of That Time I Got Reincarnated as a Slime, season 3 episode 17, titled The Lightspeed Hero, was aired on Nippon Television in Japan on August 2, 2024. This installment featured the introduction of Masayuki, also known as the Lightspeed Hero, whose incredible skill, The Chosen One, led him to become a hero.

In addition, during episode 17 of That Time I Got Reincarnated as a Slime season 3, Mjöllmille disclosed the schedule for the Founder’s Festival to Rimuru Tempest and his top executives. Rimuru was also informed by Souei that Masayuki’s party had successfully defeated Orthrus, a notorious merchant group known for their involvement in the slave trade.

Please note: This article includes spoilers for episode 17 of That Time I Got Reincarnated as a Slime season 3

That Time I Got Reincarnated as a Slime season 3 episode 17: Mjöllmille lays down the Founder’s Festival’s schedule

Mjöllmille gives a presentation (Image via 8Bit)
Mjöllmille gives a presentation (Image via 8Bit)

The 17th episode of That Time I Got Reincarnated as a Slime season 3 starts with Rimuru hosting a meeting, during which Mjöllmille gives a brief overview of the plans for the Founder’s Festival. The merchant also announces that Jura Tempest will be hosting a national launch party the evening before the official opening ceremonies.

The ceremony will feature an array of special drinks and food for both the invitees and their accompanying bodyguards and merchants. Additionally, a lavish banquet will be hosted for the visiting royalties, with Shuna and Yoshida in charge of preparing delectable delicacies.

Mjöllmille also mentions that the Founder’s Festival will begin with a magnificent speech from Rimuru. Along with this, the merchant has arranged for a play to be performed at the newly renovated Tempest Theatre, showcasing Rimuru’s appreciation for art and culture to the audience.

Veldora and Ramiris (Image via 8Bit)
Veldora and Ramiris (Image via 8Bit)

On the second day of the Founder’s Festival, the battle tournament will take place at the Coliseum. During the afternoon, visitors will have the opportunity to explore the city and sample various stalls in the town. The highly anticipated Dungeon will finally open on the third day, allowing adventurers to take part.

In episode 17 of That Time I Got Reincarnated as a Slime season 3, Ramiris and Veldora approach Rimuru with news about an issue in the dungeon. The Storm Dragon reveals that the forest planted on Floor 95 has grown out of control and encroached upon Floor 71.

The Fox Spirit, as seen in the episode (Image via 8Bit)
The Fox Spirit, as seen in the episode (Image via 8Bit)

Despite the creeping forest absorbing the magicules in its path, there have been no “bosses”on the floors it covers. In response, Ranga suggests to Rimuru that he may have a solution and introduces a fox spirit with the expertise to cleanse forests.

Rimuru bestows the fox spirit with the name Kumara, causing it to evolve into a nine-tailed fox. The creature assures the Demon Lord that it will successfully complete the task. In the meantime, Treyni and Shuna inform Rimuru that they have identified potential candidates for the “boss”roles, bringing a sense of relief to the Demon Lord.

That Time I Got Reincarnated as a Slime season 3 episode 17: Souei’s report reveals Masayuki’s accomplishments

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

Following Mjöllmille’s presentation in episode 17 of That Time I Got Reincarnated as a Slime season 3, Rimuru requests a report from Souei. The Majin informs Rimuru that Viscount Cazac of Blumund has been apprehended. According to the gathered information, Cazac was a prominent member of the notorious group known as Orthrus, who were notorious for their brutal slave trade.

Rimuru is informed by Mjöllmille that Orthrus possesses a level of strength that surpasses that of an entire country’s military. As a result, the Slime believes it is necessary to eliminate the organization. However, Rimuru soon discovers that Masayuki, also known as the legendary “Lightspeed hero,”had already taken care of eradicating the group.

Masayuki in That Time I Got Reincarnated as a Slime season 3 episode 17 (Image via 8Bit)
Masayuki in That Time I Got Reincarnated as a Slime season 3 episode 17 (Image via 8Bit)

The storyline of That Time I Got Reincarnated as a Slime season 3 episode 17 then turns its attention towards Honjo Masayuki, as he readies himself and his party for a journey to Jura Tempest. The episode also delves into Masayuki’s backstory, revealing the events that led to his rise as a heroic figure.

On his way home from work one day, Masayuki suddenly found himself transported to the Cardinal world, where he was faced with a difficult dilemma. However, he was granted The Chosen One, a special ability that not only brought him recognition but also forged strong alliances. In just one year, he rose to the ranks of the hero elite.

Masayuki's party in the episode (Image via 8Bit)
Masayuki’s party in the episode (Image via 8Bit)

After watching episode 17 of That Time I Got Reincarnated as a Slime season 3, the story jumps to Yuuki asking Masayuki and his team to look into and put an end to the slave market, Orthrus, located in the Kingdom of Ballachia. The emperor warmly greets the hero and throws a luxurious celebration in their honor.

Coincidentally, Masayuki happens to witness a clandestine slave trade between Ballachia’s Marquis Gohsel and Count Braeber while taking a stroll in the hallway at night. Upon being discovered, Gohsel fatally injures Braeber and attempts to shift the blame onto Masayuki.

The Orthrus members, as seen in the episode (Image via 8Bit)
The Orthrus members, as seen in the episode (Image via 8Bit)

Fortunately, Masayuki’s group arrives just in time to rescue their leader. Jiwu impresses everyone with her ability to heal Baeber, while Jinrai intimidates the man into confessing the truth. Masayuki relies on his innate “Chosen One”skill, which guides him through a brave and noble journey.

In episode 17 of That Time I Got Reincarnated as a Slime season 3, it is revealed that Marquis Gohsel was a key figure in the Orthrus group and that their main headquarters were located in Ballachia. The emperor then asks Masayuki to eradicate the corrupt merchants, a task he successfully completes.

Masayuki wonders what to do with the elves (Image via 8Bit)
Masayuki wonders what to do with the elves (Image via 8Bit)

Once he has rescued the enslaved elves, Masayuki ponders over what he should do with them. The emperor of Ballachia is determined to protect his kingdom from suffering the same destiny as Falmuth, thus compelling the hero to lead the elves to the Great Forest of Jura.

However, once the news spreads, rumors start to circulate that Masayuki is on a mission to defeat a Demon Lord. In the 17th episode of That Time I Got Reincarnated as a Slime season 3, the scene switches back to the present, showing the Lightspeed hero making his way to the Jura Tempest.

Masayuki's The Chosen One skill (Image via 8Bit)
Masayuki’s The Chosen One skill (Image via 8Bit)

Masayuki is curious to see Rimuru’s reaction towards him. The conclusion of That Time I Got Reincarnated as a Slime season 3 episode 17 has him hopeful that everything will turn out well. Despite this, he can’t help but contemplate the potential of his skill, The Chosen One.

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