On the eve of her 20th birthday, Haruka decided she wanted to lose her virginity before turning 20 and signed up for the shoot. She has dated three men, but broke up with two without even kissing them. Her only sexual experience was during her second year of high school, lasting just two days. Haruka refuses intercourse, so she receives six internal ejaculations through blowjob. Since then, she hasn't been able to date anyone and is now on the verge of entering her twenties. With a B-cup bust she's self-conscious about, she blushes instantly if anyone looks at her. Enduring intense pain, she finally experiences penetration and the joy of her first real sex.