Imaizumi Yui is a member of Keyakizaka46 1st Generation.
- Audition song: Hanamizuki (Hitoto Yo)
- Favourite Nogizaka member: Hori Miona
- Former member of the idol group Smile Gakuen under the name Kashiwagi Yui and nickname Yuiful.
- She plays a number of instruments. As of her debut: piano (12 years), flute (2 years) and drums (1.5 years).
- With 4 elder brothers she is the youngest in her family.
- At Keyakizaka’s first greeting event, she ended her introduction with an acappella rendition of an original song she wrote: Sugao (Honesty)
Name: Imaizumi Yui (今泉 佑唯)
Birth date：September 30th, 1998.
Birth place：Kanagawa, Japan