(Last name, first name format)
Yoru Yukina

Age: 15 years old

Height: 148 cm

Weight: 40 kg

Year: 1st year of highschool

School: Karasuno

Club/s: Karasuno Girls Volleyball Club
Karasuno Boys Volleyball club(as manager)
Karasuno Newspaper club(as a Photojournalist)

Position in game: Libero

Likes: Manga, anime, cookies n' cream flavored ice cream, cats, dogs, music, her room, peace, singing, her camera, winter season and headphones

Dislikes: Someone saying that she looks like a doll because of her appearance, people assuming she's sick or anemic because of her pale, teasing about her height, her taking the initiative of socializing, the outside world, noise, disturbance in her free time

Neutral: Volleyball (she doesn't like nor dislike volleyball)

Looks:

New drawing but same colors:

She is oftenly seen wearing a school uniform, PE uniform. Her volleyball uniform however is different from the rest of the girl when it comes to the design of the outfit. Her volleyball uniform design has sleeves, collar and longer shorts. In short, the design of her volleyball uniform is like the boys, the colors are only different.

Personality: Logician and Mediator. She blunt, kind but mischievous, thoughtful but doesn't show it in expression, always think logically, but considering she's a mediator as well, she can be imaginative as well

Others: She's asthmatic, introvert, a multi-tasker. Her parents are both famous businessman and businesswoman, and they graduated from Karasuno reason why she's at Karasuno. She graduated middle school at Kitagawa Daichi, but she only knows Kageyama by name ever since she heard the nickname King of the Court, but Kageyama doesn't know her. She is a student from Class 1-4

Crush: Tsukishima Kei

Speed-4/5
Stamina-3/5
Intelligience-5/5
Jump-3/5
Technique-4/5

Haruno Mahiru

Age: 17 years old

Height: 175 cm

Weight: 53 kg

Years: 2nd year Highschool

School: Nekoma

Club: Volleyball Girls Club

Position: Wing Spiker

Likes: Volleyball, Filipino foods, halo-halo, cats and cooking

Dislikes: Someone judging her food taste, Kuroo asking her to help train Lev

Looks:

(Don't mind her outfit)
Often seen wearing her PE uniform and volleyball uniform

Personality: cheerful, loud, energetic, confident, kind, sweet, puts a lot of flowery words on her sentence

Others: She is childhood friends with Kuroo and Kenma. She started studying at Nekoma at middle school

Crush: Kuroo Tetsuro or Akaashi Keiji

Speed-5/5
Jump-4/5
Stamina-4/5
Intelligience-3/5
Technique-3/5

Oikawa Amaya

Age: 16

Height: 173cm

Weight: 52 kg

Year: 1st year HS

School: Aoba Johsai

Club: Volleyball Girls Club

Position: Setter

Likes: Volleyball, owls, music, being treated like a princess

Dislikes: People comparing her to her older brother—Oikawa Toru, Kageyama trying to beat her brother when it comes to being the best setter, her brother's fans

Looks:

(Don't mind her clothes and other writings)
She is often seen wearing a volleyball uniform and PE uniform and school uniform.

Personality: Quiet, blunt, confident, mischievous, willing to teach someone unlike her brother, introvert

Others: She graduated middle school at Kitagawa Daichi. She isn't good terms with Kageyama. She is a complete opposite of her brother.

Crush: Kentaro Kyotani

Speed-3/5
Jump-4/5
Stamina-3/5
Intelligience-4/5
Technique-4/5

Fuyuno Kagami

Age: 17

Height: 180 cm

Weight: 50 kg

Year: 2nd Year

School: Shiratorizawa

Club: Volleyball Girls Club
Volleyball Boys club(as manager)

Position: Middle Blocker

Likes: Volleyball, summer season, spring season, carbonara, birds, cooking and dancing

Dislikes: Yoru Yukina, messy places, rude people and being ignored

Looks:

She is often seen wearing her volleyball uniform(training clothes and tournament clothes) and PE uniform. She can be seen wearing regular uniform as well.

Personality: Blunt, cheerful, short tempered. She can be smart at the game but a complete opposite when outside the court. Energetic, kind, thoughtful and impatient, judgmental.

Others: She studied first 2 years of middle school at Kitagawa Daichi then moves to Shiratorizawa at 3rd year of middle school and continues highschool there. In her time at Kitagawa Daichi, she comes across with Yukina and started in bad terms with her. Though, Yukina didn't even talk to her yet, Kagami already dislike Yukina. Her hatred grows deeper when she sees how Yukina plays volleyball, the way Yukina saves the ball casually and calmly annoys Kagami. She also grew jealous of Yukina with her wits, skills and popularity. Even though the only reason why Yukina is popular is because of her doll-like appearance which everyone talks about. However, despite the hate relationship between the two, Kagami keeps things professional with Yukina(as much as she can)especially on court. Her certain goal is to defeat Yukina since she was always beaten by her. She treats Yukina as her formidable opponent or rival.

Crush: Tendo Satori

Speed-4/5
Jump-4/5
Stamina-5/5
Intelligience-2/5(Outside court) ; 4/5(in court)
Technique-4/5

(I could add more OCs base on your OCS)