Saki is very calm and serious. Saki appears cold and distant to others. She can be curt, stubborn and frank. She avoids small talk and doesn't like to talk with others, especially about her personal issues. Saki seems like a delinquent who is always late for class, dresses poorly, and is impolite to others. she is shown to be a kind and loving older sister, and fierce protector of her family. She often run errands involving Keika or Taishi. It is revealed she is not a delinquent but very kind.