It really varies. Some manga have characters who can keep secrets well, while in others, secrets are spilled easily. It all depends on the story's context and the personalities of the characters.
It really varies. A well-crafted secret in a novel can make it more intriguing. But if not handled properly, it might seem forced or predictable. The key is how the author reveals and plays with the secret throughout the story.
The key is to build suspense. Don't reveal too much too soon. Make readers constantly wonder and guess. And have characters who are cautious and paranoid about the secret being discovered.
In many cases, secrets can be kept in romance novels. They might add mystery and drama, influencing the relationship development. Sometimes the secret being revealed leads to a big climax or resolution in the story.
I'm not sure which specific 'Can u keep a secret novel' you're referring to. There could be many novels with secrets in them. Maybe it's about a character who has a big secret that they're afraid will change their life if it gets out.
Yes, it is ethical to keep it a secret. Everyone has the right to privacy, and your friend's nude stories are clearly private. By keeping it a secret, you are respecting their dignity and rights.
I don't know for sure if it's a popular book. There are so many novels out there that it's hard to keep track of all of them. It might be popular among a certain group of readers who like stories with secrets and intrigue.