Hiyori is a stubborn young girl from the countryside who yearns for the city. She is very popular at her school and has her own fan club. She drags Hibiya to the city with her in order to get Momo's autograph and stays at her sister Ayaka's house. She falls in love with Konoha who was staying there at the time. She becomes involved in a traffic accident and gets stuck in a time loop trying to save Hibiya, but while Hibiya successfully escapes the Heat Haze, she passes away. Her song is "Kagerou Daze" (カゲロウデイズ?, "Heat Haze Daze").