Extra: Rimuru's Glamorous Life as a Teacher, Part 1

Extra: Rimuru's Glamorous Life as a Teacher, Part 1 (外伝：リムルの華麗な教師生活 その１) is the third OAD of the anime adaptation of That Time I Got Reincarnated as a Slime.

Synopsis
Rimuru, who is teaching Shizu's students as a substitute at the Kingdom of Ingrassia's Freedom Academy, takes part in an orientation in actual field combat in the school's annual outdoor training event. Transfixed by the prize he gets if he wins, he accepts a challenge by the teacher Jeff. However, an enemy appears before the students...

Summary
As the Students of Class S were playing volley ball near the school, Rimuru decided he will stay at Freedom Academy for a few more days while rested under a tree with Ranga. After getting hit by the ball, Rimuru was used as the replacement for the volley ball.

At the Mansion of the Domain Lord, Count Guratol, Ulamuth was seen resting on the bed because of a disease. Gesdar informed Guratol about the situation with the thieves and provides him a letter regarding the event that is held by the Free Academy in the Kingdom of Ingrassia.

In the Academy, Rimuru regrets questions Great Sage about the newly bought antique lamp for the table in the Academy.

To Be Continued in Extra: Rimuru's Glamorous Life as a Teacher, Part 2...

Characters
MAIN:


 * Rimuru Tempest
 * Great Sage

BRIEF APPEARANCES/CAMEO:
 * Shizue Izawa (Mentioned)
 * Spirit of Light (Flashback)
 * Ramiris (Flashback)
 * Chloe's Spirit (Flashback)
 * Benimaru
 * Souei
 * Souka
 * Hakurou
 * Gobta
 * Rigur II
 * Geld
 * Myrd
 * Dord
 * Gabiru
 * Vesta
 * Haruna
 * Hobgoblins/Goblinas
 * High Orcs
 * Dragonewts

RETURNING CHARACTERS:


 * Kenya Misaki
 * Ryota Sekiguchi
 * Gale Gibson
 * Alice Rondo
 * Chloe Aubert
 * Ranga
 * Shuna
 * Shion
 * Rigurd
 * Kaijin
 * Kurobe
 * Garm

NEW CHARACTERS:


 * Count Guratol
 * Ulamuth
 * Gesdar
 * Jeff
 * Tiss

Locations

 * Kingdom of Ingrassia
 * Freedom Academy
 * The Town of Guratol
 * Mansion of the Domain Lord, Count Guratol
 * Jura Tempest Federation
 * Rimuru City
 * Sealed Cave

Trivia

 * This OAD is bundled with the special edition of Manga Volume 14.
 * This is an anime original episode as it does not adopt any material from the Light Novels and the Manga.
 * This episode is written by Fuse, the series original author.
 * This episode is set during the events of Light Novel Volume 4: Human-Monster Interaction (Manga Chapters 40-55/Anime Episodes 20-23).
 * This episode, along with OAD 1 and OAD 2, premiered at a special screening event held at Tokyo's Marunouchi Piccadilly theater featuring a special talk with Miho Okasaki, Chikahiro Kobayashi, Azusa Tadokoro, and Ayaka Asai the voice actors for Rimuru, Ranga, Chloe, and Kenya respectively.