OSTER Project-Provided Song, Hello, Happy World!「スマイリーキャロル」Digital Release!

Song provided by OSTER project, Hello, Happy World!「スマイリーキャロル」digital release!

Distribution start date

December 25, 2025 (Thursday) 20:00 (JST)~
※Some services will sequentially begin distribution starting December 26 (Friday)

Streaming/Download

https://bmu.lnk.to/HHW_SmileyCarolwe
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Song details

https://bang-dream.com/discographies/4168