Yuna is from Tokyo, Japan. She shares the name Yuna with another big boob Asian model called Yuna Kawase who also was born on the same day but they aren't the same person. I think it's customary to list AV models birthday as Valentines Day.
Not much is out there (in English, anyways) about this model except that she likes cars, parks and walking.
Hana Haruna
Ren Kajika
Shion Utsunomiya
Momoka Nishina
Julia Boin
Mayu Koizumi
Hitomi Tanaka
Yuna Miruku