Mai Haruna (Japanese: 春菜 まい, Hepburn: Haruna Mai?) is a popular and prolific Japanese model and AV idol. She debuted in 2002 and performed in a variety of Japanese adult video genres until her retirement in 2005.
Haruna was born in Tokyo on March 20, 1984. Until Haruna's generation, the women in her family were of a thin build. Both her mother and grandmother were thin, and Haruna and her older sister were the first in the family to have large breasts. Haruna's bust developed early, beginning before her entrance into junior high school. By her third year in junior high school, she was already a metric F-cup.