The , also known as the OVA episode " Eris the Goblin Slayer ," is a high-quality side story that bridges the gap during the first season. Rather than being a simple filler, it serves as a critical character study for Eris Boreas Greyrat and introduces pivotal figures for future arcs. Review Highlights
This review further details how the OVA sets up future storylines and enriches Eris's character: Mushoku Tensei: Isekai Ittara Honki Dasu Special
: The special introduces Cliff, a conceited young mage who serves as a foil to Rudeus. Their interaction highlights Eris's maturity and sets the stage for Cliff’s significant role in the Ranoa Magic Academy arc in Season 2. The , also known as the OVA episode