Gentaro is the very nature of a hot-blooded student. Sporting a pompadour hair-do and a bad boy image, he is actually harmless (as far as anyone can tell.) He stands up for the weak, has a heavy (and unique) sense of honor, and always tells it like it is (even if he is the only one who sees it that way.)
Gentaro’s mission in life is to make friends with everyone, whether they like it or not. He seems to have the uncanny ability to sense a new student even when not in the same room with him.