Reina Washio (鷲尾伶菜) is a Japanese singer born on January 20, 1994, in Karatsu, Japan. She is best known for her work in J-pop as a member of the vocal groups Flower and E-girls, where her polished vocal style and expressive tone helped define her presence in ensemble performances during the 2010s Japanese pop scene.
Washio built her reputation through melodic pop material that emphasized emotional delivery and a clean, contemporary sound. Her role in Flower established her as one of the group’s most recognizable voices, while her time in E-girls broadened her visibility across Japan and connected her to a wider idol-influenced pop audience.
She is signed to Sony Music Associated Records and maintains an official profile through her website, rei-web.jp, reinforcing her standing as one of the notable Japanese female vocalists associated with major group projects.