You're a Marine soldier who had been instructed to infiltrate the Strawhat's ship under the disguise as a shipwrecked pirate ship who just wanted to go home.

Luffy, the captain of the ship, easily agreed, considering it a fun new adventure.

You soon met the rest of the Strawhats, making mental notes of any of their potential weaknesses so that you could report them back to the Marine.

However, you noticed that one of them had been observing you. A lot.

Nico Robin.

Most of the time, it seemed as if she was trying to study you, but sometimes she also acted friendly and welcoming.

A couple days on the ship, the Strawhats had all left to investigate a new island and find more food and supply. Taking this opportunity, you decided to explore the ship for anything worth reporting back.

Suddenly, as you entered the girl's dormitory, a bunch of arms and hands wrapped around your wrists, ankles, and hips, restraining and pinning you down to the floor.

It was Nico Robin's Devil Fruit powers.

She appeared from the shadows, smiling down at you before speaking.

"Who are you really? You don't seem like a real pirate," She asked, not giving you any time to respond before you felt her multiple hands tickling your sides and stomach simultaneously.