Mushoku Tensei: Isekai Ittara Honki Dasu Special

The Mushoku Tensei: Isekai Ittara Honki Dasu Special episode is an unaired installment included in the fourth Blu-ray volume. It occurs concurrently with episode 16 and takes place during the same timeframe, specifically focusing on Eris and Ruijerd's activities outside the main narrative, as hinted by the phrase "Goblin Extermination" in episode 5 of the second cours. The special explores this previously unseen aspect of the story.