Horikoshi High School
Imori was born on October 26, 1968 in Shimonita, Kanra District, Gunma, Japan. She graduated from Horikoshi High School in Nakano, Tokyo, Japan. While still in high school, Imori was selected as a winner from among 120,000 contestants in the 9th Horipro Talent Scout Caravan competition in 1984.