First Name: Toshiko(meaning "clever child.")

Last Name: Kageyama(meaning "shadow mountain")

Nicknames:
Toshiko-san(by Kageyama, Daichi, Kenma, Sugawara, Akaashi, Iwaizumi, and Yamaguchi)
Toshiko-chan(by Oikawa)
Toshi-chan(by Nishinoya, Tanaka, and Yamamoto)
Kageyama-chan(by Shimizu and Yachi)
Cutie-chan(by Bokuto)
King's sister(by Tsukishima)
Princess(by Kuroo)

Age: 15

Sex: Female

Relatives: Tobio(older brother)

Occupation: First year high school student/Manager

Cup size: B

Hair length: waist

Hair color: Black

Eye color: blue

Likes:
-Her brother
-Volleyball
-Watching her brother in volleyball games
-Reading books
-Going to libraries
-Cooking
-Laundry
-Supporting Kageyama
-Teasing Tsukishima
-Listening to music
-BTS
-Suga
-V
-Jimin
-Jungkook

Dislikes:
-People who looked down at Kageyama
-Kageyama being harsh to Hinata
-Tsukishima and Kageyama bickering
-Sour foods
-People who talked badly about Kageyama behind her behind
-People messing with her
-Lies
-Tanaka taking shirt off during practice
-Oikawa belittling Kageyama
-Oikawa teasing Kageyama and Iwaizumi

Personality: Toshiko is a quiet, studious, and intelligent introvert who barely shows emotion towards other people. Despite lacking emotion and her timid nature, she cares deeply for her older brother and will do anything for her. She also gets a bit annoyed when Kageyama is being a bitch to his teammates or when other Karasuno members are getting too rowdy, she'll knocked them in the head with her book where she calls it the "Toshiko Chop". 😂😂😂 And Yes I got that from soul eater XDD. She's also pretty dry and snarky when it comes to the people who bullied Kageyama. For example: she always calls Tsukishima "Salty-kun", "Salty dinosaur", "Salty beanstalk", "Stingyshima", and "Saltyshima" much to his annoyance.

Bio: Toshiko is Kageyama's little sister. She and Kageyama been together since they were kids where she would always watches her brother play volleyball and plays volleyball with him. However she prefers to watch his brother from afar when she decides to be manager of the volleyball team in Kitagawa Junior high school. When Kageyama's former teammates turned against him, she is the only one to stood by his side and attend the same school as her brother. She then became manager of Karasuno High School volleyball team.