 If you liked
GTO
|
 ...then you might like
Rokudenashi Blues
|
I'd say the main characters really resemble each-other quite a bit. And they're both in a school setting revolving around delinquents. They're both tough guys, who're really very stupid, but always have their eyes set on doing what's right. Being nosy and involving themselves when they see something's not right.
I'd say they're remarkably similar.