|Family:||Kiyotaka's younger sister|
|Occupation(s):||High school student (second-year)|
|Affiliation(s):||Sanada Central High|
|Debut:||Episode 5 (anime)|
Kiyotaka is tall and lean with black eyes and hair. He wears round, black-rimmed spectacles and the Sanada Central High uniform.
Kiyotaka is a laid-back and friendly individual. He is quite outgoing and is known to have gone on group dates. He sometimes fails to read situations and cannot pick up hints from others. He also seems to find his sister's misfortune amusing.
In the seriesEdit
High School Boys and Old FriendsEditKiyotaka, while walking with his sister, spots Hidenori and Yoshitake. Happy to see his old friends, he strikes up a conversation with them and they tell each other about their schools. Without him realizing it, his sister begins glaring at the boys, and they mistake her for his girlfriend who wants him to herself. He does not notice that they're becoming uncomfortable, and invites them to a restaurant nearby despite them clearly wanting to leave.
Inside, Kiyotaka carries on the conversation, but Hidenori's and Yoshitake's responses become subdued as they continue to receive dark looks from his sister. Kiyotaka then starts telling them how he got into trouble on a recent group date and they are alarmed that he'd say it in front of his own girlfriend. Hidenori interrupts him for this reason, but he tells them it's only his sister.
Oblivious to his friends' shocked faces, he adds that she was squinting badly because she had lost her contacts and needed someone to take her home. He laughs at her situation, but the boys yell at him in anger, saying he should have told them at the very start.