Perhaps the secret is that Lucy has a unique magical item that is very powerful and dangerous. Natsu keeps it a secret because he doesn't want other mages in Fairy Tail to get greedy or misuse it. This item could be something that was passed down in Lucy's family and she doesn't fully understand its potential yet.
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.
Hard to say. Its popularity could be influenced by factors like the plot, art style, and marketing. Maybe it's a hit among some specific groups of manga enthusiasts.
Well, to figure out if it's your mother or sister in the manhwa raw, you need to pay attention to the details like their appearance, personality, and interactions with other characters. It might take some time to get a clear answer.