'Kingyo Hanabi' is a simple video that shows Otsuka singing underwater and on a small island during dawn/dusk. While Otsuka is on the island, she holds a firework in her hand that emits golden sparks, which then rain down around Otsuka who is under the water.
'Kingyo Hanabi' is a straightforward animation featuring Otsuka singing while submerged and standing on a small island at dawn/dusk. As Otsuka stands on the island, she holds a firework that emits golden sparks, which then cascade down around her as she remains underwater.