Emi  

, 絵美

Kiyohiko's childhood friend is named Emi. She enjoys teasing him. One day, while playing with friends, Emi mistakenly kicked Hidenori into the river. Despite this incident, the three of them became close and spent their summer vacation together. During that time, Emi developed feelings for Hidenori but was unable to express them before he revealed that they were actually cousins.