"Hitohira" (ひとひら; Petal) is a song recorded and released by E-girls. It was released on December 6, 2017 as the second b-side of the group's twentieth single "Kitakaze to Taiyou". It is a solo song by Washio Reina.
- Washio Reina (main vocals)
- Fujii Karen, Takebe Yuzuna (backing vocals)
- Odake Masato
- HIKARI, Carlos K.
- Other Information
- Additional Arrangement: Iehara Masaki
The song can be found on the following releases:
- First solo song to be released under E-girls' releases.