Kenjiro Masuda (増田 健二郎), New Ultimate Marine Biologist
Despite his manly look and cool attitude, he's very shy and trying to be very serious, even though it's very uncomfortable to him. Kenjiro likes to be praised and doesn't like criticism, which he counts as an insult to someone or him. Because of this, he can argue with anyone, even with friends. But after that, he apologizes many times because of his behavior.