Kahori Shimizu is the younger sister of Kiyoko Shimizu and joins Karasuno. She has always played volleyball and comes from a somewhat complicated past. She has a temperament that is a bit impetuous, especially when provoked, and she is trying to open herself up to other people again. Karasuno will be her home, yet her attitude has attracted the attention of the Aoba Jhosai captain. Because Oikawa had realized it, she would never have paid attention to him if he had not bothered her.