- Artist(s): 櫻坂46
- Album: Unhappy birthday構文 (Special Edition)
- Release Date: Oct 29, 2025
- Genres: bhojpuri pop, bhojiwood, brazilian funk, phonk, brazilian phonk, funk carioca, funk bruxaria, brega funk
- Popularity: 55%
- Number of Tracks: 7
- Release Type: album