Volleyball dorks plus Kaida

This is a story about the adopted sister of Kageyama, Tobio. Her name is Kageyama, Kaida. She was adopted at the age of 13 and has been living with them for two years now. She is a very shy person and doesn't do well in social situations so it took her a while to get used to her new family. She is now 15 years old and joining Kageyama, Tobio at Karasuno. She becomes their assistant coach because she is very good at strategizing and loves to help out her big brother. Join Kaida on her adventures with her big brother and the volleyball dorks.