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Kiyohiko is a friend and neighbor of Emi.
Kiyohiko has brown hair and chocolate brown eyes. He is usually seen wearing a brown jacket over a black shirt. In his summer holidays, he was also seen wearing blue shorts that reached above his knees.
Kiyohiko comes off as a timid and soft-spoken individual. He doesn't retaliate against Emi despite being frequently kicked into the river for her amusement.
Emi and Kiyohiko were childhood friends. For some reason, Emi found it entertaining to kick Kiyohiko into rivers and made a habit out of it. Kiyohiko didn't like it one bit, but never spoke out or tried to take revenge.