Jun Kudō occupies seat number 9 in class 2-F. Acclaimed as a "Genius Storyteller," he possesses the stated ability to narrate any story, often delivering them in a serious tone that moves others to tears. Some tales serve a mocking purpose. His appearance features a calm expression and spiky hair, matching his consistently serious and calm demeanor. He demonstrates a clear passion for storytelling, avoiding jokes or attempts at humor. Kino views Jun as a rival, though Jun shows no apparent concern about this dynamic. Jun resides with his grandfather. He previously checked out every library book Nozomu Itoshiki intended to read. His name originates from the Junkudo-Shoten bookstore and its founder. Jun is noted as a "good-looking guy" and displays an interest in Nozomu Itoshiki, adding to the characters attracted to the teacher. His birthday is indicated as June 14, referenced in Zan Sayonara Zetsubō Sensei episode 9.