- Hayashibara Megumi
- RAINBOW 5
- Catalog Number
- Sore wa Tomodachi (それはトモダチ; That is My Friend)
- Choudo Kyuu (超ド級; Super Class)
- Sore wa Tomodachi (Original Karaoke)
- Chou Do Kyuu (Original Karaoke)
"RAINBOW 5" is the 29th single released by Hayashibara Megumi, and it is her tenth character single.