Horikoshi High School
Hayami was born in Atami, Shizuoka, and was raised in Guam and Hawaii from the age of 3 to 14 years old. She was scouted by an agent at the age of 14 and soon moved back to Japan to start her career as a singer. After graduating from Horikoshi High School in 1986, she entered Sophia University and graduated, receiving a Bachelor's Degree in Comparative Culture.