Keiju Tabuki
多蕗桂樹
A teacher whom Ringo has an obsessive crush on. He is the teacher of Shoma and Kanba and the advisor of a birdwatching club. He was Ringo's older sister Momoka's childhood friend before she died.
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Penguindrum
Supporting (Role) TV
Akira Ishida
Japanese
Andrew Love
English
Francesco Bulckaen
Italian
Jae-Heon Jeong
Korean