"Jaa ne, Mata ne" (See You, Catch You Later) by Riria. , who also provides the voice for the film's heroine, Uta. Highlighted Tracklist

: Songs like Eve's title track quickly amassed tens of millions of streams on platforms like Spotify and Apple Music, trending heavily on global J-pop playlists.

The next morning, Tokyo woke up to a world without bubbles.

The ending theme song is a heartfelt ballad performed by singer-songwriter Riria, who also voices the main character, Uta. This song provides a gentle, emotional conclusion to the film’s intense events.

Whatever the cause, at exactly 11:59 PM on New Year's Eve, every copy of the Eternal Refrain soundtrack began to leak . The music escaped its files, its vinyl grooves, its streaming servers. It poured into the air as visible sound—shimmering, iridescent bubbles that rose from speakers and screens and headphones. Within an hour, the bubbles had filled the streets of Tokyo. Within a week, they had crossed oceans.