I'm not entirely sure specifically what 'black rule obeah scool stories' are. 'Obeah' is a form of folk magic in some Caribbean cultures. It could be stories related to some sort of rules within a context that involves black magic or obeah in a school setting, but without more context it's hard to say for sure.
There's no way to tell without more information. They could be completely fictional, made up to entertain or to teach a moral lesson. Or they could be based on real events that have been exaggerated over time. Maybe in some Caribbean schools where obeah has a presence in the local culture, there could be some real - life incidents that inspired these stories, but it's just as likely that they are pure fantasy.
The main distinctions lie in the distribution and marketing. Mainstream manga usually have larger publishers and wider reach. Independent manga might have smaller print runs and be harder to find. Also, independent ones might be more daring in terms of storylines and character development.
Naughty cats in cartoons are typically depicted as being very agile and smart. They might sneak around, steal treats, or play tricks on other characters. Their mischievousness is what makes them so charming and fun to watch.
The dog in the far side cartoons might be getting tutored through various comical and unexpected ways. Maybe it's being taught funny tricks or learning some odd behaviors.
The main features might include vivid imagery and simple yet powerful messaging. The cartoon probably aims to raise awareness or present a specific viewpoint on immigration.