Mushoku Tensei: Isekai Ittara Honki Dasu - Eris no Goblin Toubatsu, Mushoku Tensei: Jobless Reincarnation - Eris the Goblin Slayer, 無職転生 ~異世界行ったら本気だす~
Unaired episode included in the fourth Blu-ray volume. The episode will take place during the same time in episode 16 (episode 5 in second cours) and depict what Eris and Ruijerd were up to outside the main story, as teased by the comment "Goblin Extermination."
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