- Kobushi Factory
- Haru Urara (ハルウララ; Beautiful Spring)
- Harada Yuichi
- Other Information
- Arrangement: Harada Yuichi
There are currently two recorded versions of "Haru Urara" found in Kobushi Factory and Hello! Project's discography. These versions are:
- Haru Urara (Original)
- Found on the "Oh No Ounou / Haru Urara" single as track #2.
- Haru Urara (Instrumental)
- Found on the "Oh No Ounou / Haru Urara" single as track #5. This is the standard version without the main vocals.