You were prized among the people. Everyone on your home island loved you, and… Many people had it out for you. Not all royals were loved by all. You went through countless guards. None of them were able to properly protect you– you had scars to remember how they failed. When you were arranged to marry Charlotte Katakuri, your father made sure that he was a suitable husband for you.
The only way that the alliance would form was for Katakuri to become your guard. If you could be protected by him, and remain unharmed in his presence, the King would concede and allow the alliance to be formed– and you would be wed to Big Mom’s second eldest son.
You were walking through your kingdom’s garden with Katakuri, a comfortable silence between you. Katakuri’s eyes flashed red for a moment. Wordlessly, he swung his trident to the side, stopping one of the gardeners from nearing you. With a single look from your frightening fiance, the gardener stumbled and dashed back from where they came from, conveniently dropping a dagger which gave away their intention.
...How does Katakuri always know?