Usopp becomes the unlucky victim

“As soon as we find a man around that can take over your body,” said Law. Just in time, Law saw Usopp walking outside of the women’s quarter. It seemed he had just finished his work at his lab, and was now heading to the men’s quarter to sleep. Fortunately, or rather, unfortunately for Usopp, he had had no idea what was going to befall him as Law swiftly pulled him into the women’s quarter, then performed his Devil Fruit ability, “Shambles” on him and Robin, effectively switching Usopp’s body with Robin’s.

Usopp's world had turned upside down in an instant. One moment he was heading to the men's quarters, and the next, he found himself in the women's quarters with Law and Robin. His hands instinctively flew to his face, his eyes widening in disbelief. He touched his cheeks, his nose, and his hair, utterly bewildered by the unfamiliar sensation.

"What the heck just happened?!" Usopp exclaimed, his voice several octaves higher than usual. "Why do I look like a woman? Why do I sound like a woman? Heck, why do I sound like Robin? Why am I in here? What's going on?!" Robin, now inhabiting Usopp's body, chuckled with amusement. She leaned against a nearby wall, clearly enjoying the situation. "Oh, this is quite exhilarating. To be in another's body, it's quite refreshing, isn't it?"

Usopp continued to panic, frantically pacing back and forth as he tried to make sense of the bizarre turn of events. "W-w-wait, are you telling me… I’m in Robin’s body right now? I- I can't believe this! Law, did you do this? Why? How? When?"

Law, maintaining his composure, explained, "Well yes, I did this, Usopp. It's all part of an unorthodox experiment." He glanced at Robin, who now sported a devilish grin as she tested out her newfound body's movements. "This is great, Captain Law!” Robin in Usopp’s body exclaimed, then headed out to the exit of the women’s quarter. “Well then, without further ado, I shall bid my leave here. I’ll see you in a few hours Captain, after you have satisfied your…,” she blinked mischievously at Law and gestured at her own body, which was now inhibited by Usopp, “Needs.”

“Needs?” Robin’s gesture didn’t miss Usopp’s keen eyes. “What do you mean, needs? Hey Robin! Hey!” Usopp tried calling out to his crewmate, but Robin in Usopp's body had already darted out of the room, her curiosity piqued as she explored her new form. Usopp, still in a state of shock, watched her go with a mix of horror and fascination. "This is insane! Robin, get back here! Law, you have to change us back right now!"

Law sighed, realizing that he might have underestimated Usopp's reaction to the sudden body swap. "Calm down, Usopp. It's only temporary, and I'll change you back once the experiment is done."

“E-experiment?” Usopp suddenly felt his whole body growing cold. “What kind of experiment? What kind of needs? What are you talking about?”

“Shut. up,” Law let out a low growl that immediately silenced Usopp. The pressing need inside him had been mounting ever since he heard Robin saying to him that he was permitted to do whatever he wanted with her body. He was prepared to ravage him outright, and the way Usopp ranted on and on about not understanding what’s going on only added oil to the fire. “You talk way too much for someone inside Nico Robin’s body. It doesn’t suit her mature, calm image,” Law approached Usopp in Robin’s body step by step, drawing menacingly upon the sniper’s pitiful form that was now cowering in the corner. Watching Law stripping himself of his cloak, his shirt, and finally unbuckling his belt and stepping out of his pants – Usopp quickly realized what a harrowing experience this was going to be. His voice was stuck on his throat as Law’s figure finally stood bare naked before him, his manhood hard and erect. “Unfortunately for you, Usopp-Ya – I have made some deals with Robin to do anything I want with her body – and since you’re in her body now… you’re going to have to hold your end of the deal.”