The manga is trying to carry the original GTO formula (bad guys want to do bad stuff to good people, Onizuka deals with them in a silly way and teaches them what they did was wrong), but the further it goes, the more it gets flat and watered down which greatly reduces enjoyment that sometimes we just see "haha we are naughty kids, adults are bad, so we do whatever we want." Also, the atmosphere feels much heavier, even for a care center and the problematic children.
