The Legend of Heroes V: Umi no Oriuta (Cagesong of the Ocean) is the fifth installment in Falcom's long-running RPG franchise and the final entry in the "Gargarv Trilogy." The title was publish by Falcom initially for the PC on December 9, 1999 and was later remade for the PlayStation Portable by MiCROViSion in 2006.

This takes place in Weltluna, the third realm in Gagharv, seven years after The Legend of Heroes IV: A Tear of Vermillion and forty-nine years before The Legend of Heroes II: Prophecy of the Moonlight Witch. It centers around Forte, Una and McBain and their quest to seeking Leone's Resonance Stones.