Well, the Gangsta manga ends with a mix of closure and ambiguity. Some characters get the resolutions they deserve, but there are still elements that make you think and wonder about the future.
Possibly. Maybe Kohske faced some creative challenges or had other priorities that led to the discontinuation of the series. But there's no official confirmation yet.
The main difference might be in the way the story is presented visually. The manga might have more detailed art and a specific style that the adaptation could struggle to replicate exactly.
The manga novel was a comprehensive art form that included many elements such as comics, novels, and illustrations. Usually, the story in a manga novel was created by multiple authors. These authors would each create a storyboard for the story and then draw it together into a complete work. Therefore, manga could be regarded as both a novel and a manga.