Mio Hinatsuru, a current music college student who returned from overseas, takes on her first AV shoot! This very shy young lady gathers up her courage and faces a sex shoot, but she's only shy at first. She gets into the sex, straddles the man, and shows off a vigorous piston-like cowgirl position, swinging her hips up and down! Both the staff and the male actor are surprised. Even the male AV actor is flustered by the young lady's pussy stroking his dick.