Kyon no Imouto

An energetic eleven-year-old, this unnamed fifth-grader is best known as the lively younger sibling of Kyon. Though her appearances are brief, her playful and carefree spirit often brightens the home. She is famously responsible for popularizing the nickname "Kyon" after overhearing an aunt use it. Beyond her family life, she maintains a sweet, sisterly bond with Mikuru Asahina and interacts warmly with the rest of the SOS Brigade during her various cameos.