You could keep it in a private journal or password-protect it on your device. That way, only you have access.
You might consider writing it in a physical notebook and keeping it in a safe place where no one can find it. Also, make sure not to mention it to anyone or post any hints about it online. That should do the trick of keeping it hidden from everyone.
You could set the story in an isolated location where there are no other people. Or maybe have a supernatural element that makes everyone disappear.
One way could be to keep it in a private journal and lock it away.
You could password-protect it or store it in a private folder that only you have access to.
It depends. In some cases, it might be possible if the platform or medium you're using offers privacy settings or options to restrict access. But it's not always straightforward.
Yes, you might be able to depending on the platform or medium you're using. Some apps or websites offer privacy settings that allow you to control who can access your story.
You could try to hide everyone, but it's risky. It might work if you have a really unique and compelling narrative approach to compensate for the absence of those characters. However, it's often better to find a way to incorporate or develop them rather than simply hiding them.
You could keep it in a private diary or journal and lock it away.
Well, one way to do it is to make the main character have a solitary adventure in a remote area. Or maybe have a catastrophe that scares everyone away. But this might require some careful world-building and plot development to make it believable.
You might consider not writing it down at all and just keeping it in your mind. Or, if it's something physical like a paper, store it in a locked box in a hidden place.