Arc 21The Vengeance Duel
Saine and Lina escaped the Knight Continent Trial after helping Bone Dragon Sanchez open a passage to the Netherworld, then traveled to the Public Sea Domain to avenge Moxidu. Saine fought Di'ersi in a witnessed duel, and when Kanterla intervened, Saine turned his attack on him.
- Saine and Lina helped Sanchez open a one-way passage to the Netherworld, then left the closing secret realm with Angle and continued through the Knight Continent Trial.
- Saine forged Lina the Darkness Crystal Magic Staff, and the pair traveled northwest for years, explored the Trial Zone, and watched powerful beasts battle across its boundary.
- After spending twenty-three years in the Trial Zone, Saine and Lina left and traveled through the Western Islands, where Saine promised Lina a plane of their own.
- Saine reunited with Zorro in the Public Sea Domain and told him he had returned to avenge their mentor Moxidu.
- Lina arranged for Jigson to witness Saine's duel with Di'ersi, and Saine confronted Di'ersi over her betrayal of Moxidu and her service to Kanterla.
- Saine fought Di'ersi with Azure Fire, broke through her defenses, and discovered that his body tempering resisted her poison and corrosion magic.
- When Di'ersi stopped resisting and Kanterla entered the arena to protect her, Saine fired a beam from the Azure Fire Heart Magic Staff through Kanterla's Death Cloud.