Ogi is an English teacher at Kaguraya Middle School (Hōtarō Oreki's middle school).
Hōtarō's first impression of him was that he was a little weird. He likes mountain climbing.
He has mildly wrinkled skin, black hair, somewhat droopy gray eyes, and wears yellow-framed oval-shaped glasses.
He taught English to Hōtarō, Satoshi, and Mayaka while they were in middle school. He claims to have been struck by lightning three times. Also, when a helicopter was on his way near the school, he suddnley stops the lesson, went to the window and watch it till he can't see the helicopter anymore. Then he usually laughed, apologized and resumed the lesson, as claimed by Hotaro. This thing happen several times.
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|Hōtarō Oreki | Eru Chitanda | Satoshi Fukube | Mayaka Ibara|
|Kamiyama High School Students|
|Fuyumi Irisu | Masashi Tōgaito | Jirō Tanabe | Muneyoshi Kugayama | Kaho Jūmonji | Ayako Kouchi | Shōko Yuasa | Kurako Eba | Jun'ya Nakajō | Tomohiro Haba | Misaki Sawakiguchi | Takeo Kaitou | Midori Yamanishi | Mamiko Senoue | Takeo Katsuta | Yuri Kounosu | Koreyuki Tani | Ariyoshi | Iizuka | Henmi | Matsushiro | Nakayama | Mayu Hongō | Yasukuni Yoshino|
|Tomoe Oreki | Jun Sekitani | Yōko Itoigawa | Masakiyo Ogi | Haruna Anjō | Rie Zenna | Kayo Zenna|