animated video clothing underwear music twintails swimsuit bikini webm mermaid shell lofi seashell 16:9_aspect_ratio large_filesize has_audio high_resolution extremely_large_filesize tied_hair long_hair music_video no_navel nanami_lucia touin_rina hanon_hosho mermaid_melody_pichi_pichi_pitch mermaid_tail caren_(mermaid_melody_pichi_pichi_pitch) seira_(mermaid_melody_pichi_pichi_pitch) noel_(mermaid_melody_pichi_pichi_pitch) coco_(mermaid_melody_pichi_pichi_pitch) sara_(mermaid_melody_pichi_pichi_pitch) seashell_bed shell_bikini strapless_shell