The ship Lunafrea finds trouble at sea when the unsealed Leviathan regains his strength. Can the sealord's beloved nereid, Pearl, help the party survive being swallowed alive? The watery battle against a titanic foe takes its toll... The ensuing combat with the parasitic monster that Leviathan harbors may be too much for their remaining strength. Meanwhile, on Kira's journey to his birthplace, the young swordsman confronts an illusory past to rise as a true Swordlord. When Arus's ship reaches Aliahan—home of the hero who grew up as Alheru—they meet someone linked to the legendary Erdrick's party. While there, Poron takes local kids under his wing, but an unexpected fight may awaken his hidden power!

Story by Chiaki Kawamata, Art by Kamui Fujiwara