|Birthday||Thursday, 7 August 1986|
|Height||157 cm (5' 2")|
|Weight||45 kg (99 lbs)|
|Anime debut||Once Again After Crying|
|Relatives||Kazuto Miyazawa (brother, deceased)|
|Japanese voice actor|
|English voice actor|
Yukine Miyazawa (宮沢有紀寧, Miyazawa Yukine) is a second year student who hangs around in the library's reference room during lunchtime. She is very helpful and often serves tea and cooks meals for those who visit her. She also assists people in finding books. Yukine is noted to be an excellent cook, even though she prepares ready-made food most of the time, and has a small gas stove in the reference room in order to prepare meals for her guests. Yukine's theme song is Tea Party in the Reference Room.
In the visual novel, her arc simply explains her everyday life with Sunohara and Tomoya, until the moment where a year has passed since her brother died. She then visits the grave with Tomoya and her brother's gang and, after giving a very emotional speech, she is kissed by Tomoya.
Tomoya first met her in the library's reference room while trying to find a "how to" book about speeches for Nagisa. He is immediately greeted by her hospitality, and returns the next day with Youhei Sunohara due to Youhei's insistence. Ever since, Tomoya, Nagisa, and Youhei start to enter the library reference room routinely.
She later avails Tomoya and Youhei an instruction book for magical spells for them to try. Most of them are in the favor of Tomoya, involving the girls they met. The most well-known spell is the one where he accidentally found himself locked inside the gym storage room with Kyou.
In After Story, is it revealed that Yukine has friends outside of her school, who turn out to be delinquents from other schools. She made friends with the delinquents through her brother, Kazuto, who was also a delinquent, after his death trying to save a friend from an accident. The delinquents respect her and think of her as being their older caring sister. Some of them even go to the reference room when she is there to eat and get their wounds treated. However, aside from the members of his gang, no one else knows that Kazuto died. They decided to keep this a secret because of their rivalry with another gang, who would charge at them if they knew that their leader died.
In her arc during the anime, after a series of violent fights between the members of the rival gangs which threaten to end with the police intervening. After a fight between Tomoya (all the other members of her gang and Sunohara had been unable to fight after eating Sanae's special rainbow bread combined with what is implied to be 's infamous jam) and Sasaki, a member of the opposite gang, she manages to make the two sides reconcile after being hit by Sasaki. He accidentally hit her since she had dressed up as Kazuto to try and stop the fighting. After revealing the truth about her brother's death, she visits Kazuto's tomb with everyone and the two sides promise to be on friendly terms for her sake. After the visit, she tells Tomoya, Nagisa and Youhei about the existence of light orbs, revealing their origin.
She, along with many others, attended Nagisa's solo graduation ceremony. She is later seen in a photo during the New Years Party which showed her with the two gangs that have peacefully settled together. Years after graduating, she is shown still caring for the members of her brother's gang.