Mushoku Tensei: Isekai Ittara Honki Dasu Part 2 - Eris no Goblin Toubatsu

Synopsis

While Rudeus reunites with his father in Millishion, Eris sets out to fulfill her dream of slaying goblins. While at the Adventures' Guild, however, she encounters Cliff, a conceited young mage who threatens to spoil her adventure. (Source: Funimation) Note: An unaired special episode included in the 4th Blu-ray volume.