Dokidoki Heart no Birthday Party is Iwai Sayuri's second single.
Single Information[]
Dokidoki Heart no Birthday Party[]
- Lyrics: Sho
- Composition: Johnny
- Arrangement: Makaino Koji
Hatsukoi[]
- Lyrics: Ryu Machiko
- Composition: Kamei Toshio
- Arrangement: Makaino Koji
Tracklist[]
- Dokidoki Heart no Birthday Party (ドキドキHeartのバースデイ・パーティー; Heart Pounding Birthday Party)
- Hatsukoi (初恋; First Love)