- Birth Name: Miyazaki Yuka (宮崎由加)
- Nicknames: Yukanyan (ゆかにゃん), Yukanya (ゆかにゃ)
- Date of Birth: April 2, 1994
- Place of Birth: Ishikawa, Japan
- Blood Type: O
- Height: 160cm
- Specialty: Announcing baseball players, the piano
- Hobby: Looking at picture books of the universe
- Favorite Food: Mushrooms, konyaku ice cream, caramel popcorn
- Favorite Color: Peach, white, blue
- Looks Up To: Michishige Sayumi, Yajima Maimi
- Hello! Project groups:
Miyazaki Yuka took part in the sub-member "S/mileage Shin Member Boshuu!" audition in August 2011 where she became a finalist but was not chosen as one of the winners. She also took part in the 2011 "Morning Musume 10ki Member "Genki Jirushi" Audition", but failed to make it to the fourth round. On March 25, 2012 she participated in the "Dai 2 Kai Forest Award NEW FACE Audition" for Up-Front, and while she did not win the audition she did receive the Samantha Thavasa Award, was signed to the company, and recieved bi-weekly lessons. On October 10, 2012 it was announced that she would become a member of the new Hello! Project SATOYAMA group GREEN FIELDS alongside Shimizu Saki and Mitsui Aika.
On February 3, 2013 producer Tsunku announced that, despite her not being part of the Hello! Pro Kenshuusei, Yuka would be a member in the first of multiple new Hello! Project groups to feature Kenshuusei members, along with Miyamoto Karin, Takagi Sayuki, Otsuka Aina, Uemura Akari, and Kanazawa Tomoko. He stated his reasoning for including her was due to her already close relation to Hello! Project, and because he thought it would be fun and interesting to add her. She was announced as the leader of the group on June 13, 2013. Yuka became a University student in 2013, but on March 31, 2014 revealed that she dropped out to concentrate on her work as a member of Juice=Juice.
On December 21, 2018 it was announced through the official website that Miyazaki would graduate from Juice=Juice and Hello! Project at the conclusion of Juice=Juice's Spring 2019 concert tour. In her statement she confirmed that she had been considering it for the year prior and chose the timing herself since the new members had become familiar with the group. She would continue in entertainment after graduating, with details on future activities to be revealed at a later date.
- [2017.12.22] Zouni de Kenka Shite ja nee yo (雑煮で喧嘩してんじゃねえよ) (Miyazaki Yuka, Makino Maria, Kawamura Ayano)
- [2014.04.xx] Greeting ~Miyazaki Yuka~ (Greeting ～宮崎由加～)
- [2016.04.02] Miyazaki Yuka Mini Photobook "Greeting -Photobook-" (宮崎由加ミニ写真集「Greeting-Photobook-」)
- [2016.09.24] Miyazaki Yuka First Photobook (宮崎由加ファースト写真集)
- [2019.05.22] Tsunagi (繋)
- [2014.02.27] Juice=Juice 1st OFFICIAL PHOTO BOOK (Miyazaki Yuka, Kanazawa Tomoko, Takagi Sayuki, Miyamoto Karin, Uemura Akari)
- TV Dramas
-  Budokan (武道館) (as Tsurui Rurika)
- TV Programs
- Music Videos
-  Musical Koisuru Hello Kitty (ミュージカル恋するハローキティ)
-  Time Repeat ~Eien ni Kimi wo Omou~ (タイムリピート~永遠に君を想う~)
-  Okusuri no Kusuri (お薬のクスリ)
- Her Juice=Juice image color and flavor is peach.
- Played the piano from ages 5 to 15.
- Her motto is "Flowers will bloom after effort has been made".
- Said her favorite Hello! Project song is "Sakura Chirari" by °C-ute.
- Has an older brother and a younger sister.
- Her family owns two dogs, named Milk and Kuuchan.
- Became a university student in 2013, but later dropped out to focus on work.
- Likes the citrus cider from Ishikawa prefecture.
- Her favorite clothing brands are dazzlin, titty & co., and Jouetie.
- Likes the One Piece manga, and the Sanrio character My Melody Kikilala.