Kururi is one of Izaya's younger sisters. She has a twin sister named Mairu. Unlike her more outgoing sister, Kururi is shy and softspoken. She still stands out at school because she wears a gymnastics outfit as apposed to the usual uniform, and gets bullied due to her sister's reputation. According to Mairu, she was very happy when he said he found her to be cuter than the girl who was bullying her. Like her sister, she is a big fan of Shizuo's brother Kasuka.