"Umi no Koe" (海の声, "Voice of the Sea") is a digital song by Kenta Kiritani. It was pre-released from July 31 to August 31, 2015 through LISMO store,[1] and then released on December 2, 2015.[2] It was certified as Million in April 2016 by RIAJ.[3] It's an Okinawan folk song.[4]
