I don't own one piece
It was a normal day on the thousand sunny usopp and franky were in there workshops ,nami was making maps, chopper was in his office, robin and brooks were in the aquarium,sanji was making nami and robin drinks in the kitchen, zoro was training in the crows nest and luffy was siting on the sunny's head starring out at the sea. Robin started to head to the crows nest when she noticed that there was a person on top of the crows nest but she shrugged it off thinking it was zoro, so she headed up to the crows nest as she entered the crows nest she saw zoro training inside so she opened the window to send an eye on to the roof then she saw he had a vice admiral marines jacket on. At that moment he turned his head and starred at the eye she had put down robin started to shake in fear. Whats wrong zoro asked looking up at robin. There is someone on the top of the crows nest she whispered. Zoro walked over to the window and looked up and saw him and grabbed his swords and climbed up to face slashed his swords at him but it was stopped by his hand garbing the blade of the sworded. That won't work he said looking at zoro annoyance. All of a sudden there was a yell GUM GUM PISTOL and a fist came flying at him. He touched he hand and luffy's hand just went back to him and went numb. What did you do to me luffy asked. I blocked the nerves in you arm and hand so you wouldn't try to punch me again, I here to fight you I'm here to keep an eye on all of you letting go of zoro's sword. What do you mean you job is to keep an eye on us robin asked. I cant tell you that he said. So who are you robin said. That is for me to know and you all to find out. And with that a portal shaped of a door appeared and he walked in and disappeared