This is the song Clear sings in DMMd (DRAMAtical Murder), and I just fell in love with it because it's so haunting and sweet at the same time. Anyway: Capo on 7th Yura yura yurameku nami no ma ni yasashiku, yasashiku, tadayotte, umi he iku Yura yura yurameku nami no ma ni Yume wo, yume wo, miteru ko, me wo yasunde Kurage ga Oyogu
https://lyrics.primoaccordo.net/misc-cartoons/dramatical-murder-jellyfish-song.htm