The ending of Slam Dunk II was as follows:
At the end of the second part, the Xiangbei High School basketball team and Lingnan High School basketball team had a decisive battle. In the final stage of the game, the members of Xiangbei High School's basketball team performed even better in order to save the basketball team and finally won the game.
However, this victory did not make the members of the basketball team happy. Before the game, they learned the secret of Lingnan High School's basketball team. In other words, Lingnan High School's basketball team was originally a professional basketball team, and the basketball techniques and tactics they used in the game were trained and prepared.
After hearing the news, the members of the Xiangbei High School basketball team were shocked and disappointed. They realized that although they were basketball players, they should respect the efforts and dedication of professional basketball teams. As a result, the members of the Xiangbei High School basketball team decided to give up on their dream of pursuing professional basketball and continue to focus on basketball as the center of their lives, training hard and improving their abilities. They hoped to bring a better game and experience to themselves and basketball fans around the world through their own efforts and performance.
The length of Slam Dunk manga is substantial. It offers a rich and immersive story through numerous chapters and volumes, providing hours of enjoyment for readers.
It's hard to say for sure. Sometimes, factors like low popularity, changing market trends, or issues with the publishing contract could lead to a manga's discontinuation. For Slam Dunk, it might have been a combination of these.