After their battle with Glass, Naofumi and his friends work to revitalize the Cal Mira islands before returning to the castle. On the ship back to Melromarc, they meet a young girl named Rishia, who claims to have been tricked and abandoned by her companions. Naofumi, sympathizing with her fate, agrees to listen to her story, and she joins the party. Eventually, Naofumi discovers that she has a talent for transformation magic, but before they can discuss it, someone comes running to beg the heroes for assistance. A monster wearing something like a turtle shell needs to be chased off. The monster is so powerful that even the mightiest adventurers cannot defeat him—so what hope is there for Naofumi? Those answers and more in volume 6 as the epic fantasy continues!