Why are so many animes and comics different? Is it because the filming is slower, or is it because the ending is not so good?

Comics and manga were different from novels because they focused more on visual effects and dynamic performance rather than detailed descriptions of the plot. This meant that in the production process, more attention would be paid to the animation effects and picture quality rather than the storyline of the novel. In the production process of anime and manga, the ending might also be different. This could be related to the decision of the production company, or it could be that the details of the plot were different due to various reasons during the development of the story, resulting in different endings. The production of anime and manga also required a lot of time and effort. Therefore, there might be some unexpected situations in the production process, such as a twist in the plot or a disagreement between the characters. These could lead to different endings in anime and manga.