Chisato Saeki

Saeki Chisato is a character who first appears in Onisarashi-hen. She's a friend and classmate of Kimiyoshi Natsumi and Makimura Tamako. In Onisarashi-hen and Someutsushi-hen she is the one who introduces Natsumi to Tōdō Akira. In Someutsushi-hen she develops a crush on Akira and in the end Natsumi assaults her badly. (Source: Higurashi No Naku Koro Ni Wiki)