Korosuke Ezaki
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Japanese: 絵崎 コロ助
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Korosuke Ezaki's appearance in the manga.

Korosuke Ezaki, "Professor Ezaki" (絵崎 コロ助,「絵崎教授」 Ezaki Korosuke, "Ezaki Kyoujyu") is a university professor whose own self-made prototype inventions wind up doing more bad than good in the long run, especially for Ryotsu (as he considers him the guinea pig to each one he makes so far). Very vivacious in the way he presents his inventions, he is also known for quickly running away or escaping the scene without providing antidotes or solutions for his inventions once they begin to falter, making him a troublemaker in a way.

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