keep it a secret from

Simple. Just don't tell anyone. Keep your mouth shut and don't be tempted to share the secret, no matter how juicy it seems.

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 depends on the specific plot and characters. Sometimes, secrets are well-kept, but in other cases, they get revealed unexpectedly.

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.

Sure, in many novels, characters are faced with the decision of whether to keep a secret or reveal it. It often adds tension and drama to the story.

You can keep it in a locked drawer. It's a simple and direct way to prevent others from getting access to it easily.

He might be protecting her. Natsu cares a great deal about Lucy. If the secret got out, it could put her in danger, either from outside threats or from within the guild if they misinterpret the situation.

Sure. Think about romantic online novels. One character may keep their true feelings as a secret at first. They are afraid of rejection or ruining the friendship. This secret -keeping creates a lot of tension and interesting plot twists in the story.