Nicknamed "Shii", Shion is a recognized genius who comes from a family of geniuses. She has purple hair and eyes and has a low body temperature. She has many brothers, one who is a chef, one who is a pianist, and another who is a barista. Although she is a genius she lacks common sense. As Shii is the sole daughter in her family, she likes to dote on younger girls acting as an older sister to them, especially Tama.