There might be interconnected elements or a sequential nature that makes it necessary to run both stories together. Maybe one story builds on the context or events of the other.
It could be that the two stories are part of a larger narrative framework and leaving out one would disrupt the overall coherence and understanding. Or, there could be legal or copyright restrictions preventing the separation.
One way to estimate the run time for a story is by the number of words. If you know the average reading speed, say around 200 - 300 words per minute for an average reader, you can calculate the approximate time. For example, if a story has 1500 words, it might take about 5 - 7.5 minutes to read. Another factor is the complexity of the language. A story with difficult vocabulary and complex sentence structures will take longer to read and thus increase the run time.
Because it can lead to misunderstandings. You only get a partial view and might make wrong judgments.
Because one side might be biased or incomplete. It could be presenting only part of the truth to serve a particular agenda.
Because it helps us face and understand real-life challenges. Manga often reflects real emotions and situations, and avoiding them doesn't help us grow.
Often, a story can't be hidden because too many people know about it or it has elements that are hard to conceal, like major events or well-known characters.
Maybe it's due to copyright issues. Some stories have legal restrictions that prevent sharing.
It's not allowed because it could violate their privacy and rights.
Because the story may be full of unexpected twists and turns. Writers often like to surprise the readers with unforeseen events or character developments. For example, in a mystery story, new clues might keep emerging until the very end, making it impossible to predict how it will all conclude.
Often, it could be because the platform's terms of service don't allow it. They might have restrictions in place to avoid legal complications or to maintain the integrity of their content policies.
It could be that the story is private or intended for a specific audience only. Sharing things to it might violate those conditions. Also, sometimes the platform or medium where the story exists has its own restrictions on sharing.