Not all anime are based exactly on the manga. Sometimes, there are changes made for various reasons like creative decisions or to fit the animation format better.
Well, some of the best aspects of the 86 anime novel adaptations are its exploration of human nature. It shows how people can be cruel in the face of differences but also how they can find strength and unity. The relationships between the characters are complex and multi - layered, which makes it a very interesting watch or read. Also, the pacing of the story is usually well - done, not too slow or too fast.
It usually happens when the manga gains a lot of popularity and catches the attention of anime producers. They see the potential for a successful adaptation and start the process.
Well, often the anime might simplify complex manga storylines for better flow. Also, the character designs could look a bit different to suit animation. Sometimes, filler episodes are added in the anime that aren't in the manga.
It varies. Some manga artists watch the anime to see how their vision is translated and to get feedback. Others might avoid it to maintain their own creative independence and not be influenced by the adaptation.
Some do, but it depends. Some authors are really interested in seeing how their creations are brought to life on the screen, while others might be too busy with new projects to pay much attention.