When they're jealous but only behind your back. || Feat. Nami, Sanji, Penguin, Caesar Clown. [Headcanons]
Tags: jealousy, possessivness, established relationship
Wordcount: 2.7k
A/N: hellooo, this one's based on this request!! if you're wondering why this seems like such a random collection of characters, my lovely beta @uroldall requested penguin and caesar, and of course i had to write them!! so if you like them y'all gotta thank her haha (also i promise chasing ms. trouble will be the next update, these have just been sitting in my drafts) and like with my other hcs, feel free to request more characters in a batch of four, tho writing hcs is not a priority for now so please expect to wait! as always, pls like, reblog and comment! divider credits go to @cursed-carmine <33
To you, Nami was the most chill, supportive, and loving girlfriend ever. She was the wind beneath your wings, always encouraging you and offering a soft place to land after a long day. She never nagged you about who to talk to or where you should go, maintaining a trustworthy aura that made you feel completely secure and cherished. But for everyone else, the truth was far more terrifying. Nami's legendary greed didn't just apply to gold and berries; it extended with a fierce intensity to your affection and time. You were, in her mind, the most precious treasure she had ever acquired, and she guarded that treasure with a vigilance that bordered on the predatory.
Her jealousy was mostly silent and calculated. She didn't believe in making a scene in front of you because that would disrupt the peaceful and loving dynamic she had carefully cultivated. Instead, she preferred to play the long game. If you were at a bustling bar in a new port city and a stranger began to blatantly flirt with you - leaning in too close, touching your arm, or casting suggestive glances - Nami would simply smile and sip her drink, acting as if she's completely oblivious to the transgression. She would even encourage you to be polite, her voice honey-sweet and playfully relaxed, making you believe she was the most secure partner in the world.
The moment you excused yourself, perhaps to get another round of drinks or to use the restroom, her mask completely shattered. The second you were out of sight, the warmth in her eyes vanished, replaced by a gaze so icy it could freeze the surrounding ocean. She would lean toward the stranger, her voice dropping to a low, dangerous hiss that carried the weight of a thousand storms, and then she would verbally dismantle them. She'd point out every flaw in their approach, threaten their wallet, or imply that they would find themselves mysteriously bankrupt by morning if they so much as breathed in your direction again. She tore into them with the kind of surgical precision that left the stranger shaking and utterly bewildered.
The moment she caught a glimpse of you returning however, that sharp, predatory edge vanished and the transition back to her "loving girlfriend" persona was instantaneous. She would beam at you, perhaps leaning in to give you a sweet, lingering kiss on the cheek, and her beautiful eyes would sparkle with fake innocence. To you, it looked like a spontaneous burst of affection; to the traumatized stranger sitting next to her, it was a triumphant marking of her territory. Nami loved the secret power of it, knowing she had successfully defended her claim while you remained blissfully unaware of the carnage she left in her wake.
This possessiveness often further manifested in small, subconscious physical habits when you two were in crowds. While she seemed relaxed outwardly, her hands were always finding a way to tether you to her. She'd slide her arm through yours or wrap her arms firmly around your waist, thus pulling you flush against her side. To you, it felt like she just wanted you close. In reality, she was sending a clear, non-verbal signal to every single person in the vicinity: This one is mine, and I am not in the mood for negotiations.
Even with the crew, Nami's jealousy sometimes prevailed, though more quietly and not as intensely. If she noticed another crew member taking up too much of your attention - perhaps Luffy dragging you off to god knows where or Sanji spending too long showering you with gifts - she wouldn't snap at you or anything like that. No, she would instead find a way to simply… "redirect" them. She might suddenly remember an urgent chore Luffy needed to do or a kitchen emergency that required Sanji's immediate attention. She cleared the field with a smile and a polite request, therefore ensuring that the path back to her was the only one left open for you. Of course, she didn't want you to feel restricted. She just wanted to be the center of your universe, and she was more than happy to manipulate the environment to ensure it stayed that way.
Sanji
Sanji was a man who loved you with a crushing, all-consuming reality, and because of that, his jealousy always hit him like a physical blow to the gut. However, his chivalry was his strongest armor. He viewed the idea of imposing his insecurities on you as an act of cruelty. To Sanji, you were a divine being, and the last thing he wanted was to stain your perception of him by appearing petty, possessive, or unstable in any way. He would rather burn in the fires of his own jealousy than make you feel burdened by his emotions.
When the jealousy struck, it was an internal war raging inside of him. Imagine a classic Straw Hat banquet inside a tavern or bar with music blaring, food piling high, and the atmosphere filled with laughter and dumb jokes. If someone from a neighboring crew or a local dignitary began to pay you an undue amount of attention, Sanji's world would basically collapse. He could feel the heat rising in his chest, a searing jealousy that made him want to kick the offender through the wall. His eyes would shadow, his cigarette almost falling out as he gritted his teeth, fighting the urge to swoop in and whisk you away.
But the moment you looked at him, the mask was back. He would beam at you with a look of pure adoration with his usual smooth and melodic voice. He'd glide over to you, not to interrupt the conversation, but to present you with a perfectly crafted appetizer or a drink tailored exactly to your taste. He used his service in a way that ensured he didn't have to fight for your attention with attention words or aggression, but with an overwhelming display of care. Sanji wanted the other person to realize, without him ever having to say a word, that no one in this world could possibly care for you with the passion that he did.
The real struggle always happened behind the scenes though. After the event, while you were visiting stalls in the vibrant market of the island, Sanji would maintain his composure, but the signs were there if you knew where to look. He'd be slightly more clingy than usual, his hand resting heavily on the small of your back, steering you with a gentle but firm authority. He wouldn't complain, but he might let out a heavy, dramatic sigh when he thought you weren't listening, or he might suddenly become intensely focused on the quality of a piece of produce, using the distraction to hide the way his lip quivered with repressed envy.
He often took his frustration out on the only person he could tolerate being miserable with: Zoro. After a day of suppressing his jealousy, he'd return to the galley and cook with a ferocity that was almost frightening. He would chop vegetables with lightning speed, his knife coming down on the board like a drumbeat of rage. If Zoro made a comment about his mood, Sanji would explode in a flurry of never-ending insults and kicks. In a way, their usual rivalry would work as a proxy of the jealousy he refused to show you. He screamed and sulked in the safety of the kitchen, purging the poison from his system so that when he stepped back into your presence, he could be the perfect, serene gentleman once again.
In the quiet moments, his jealousy manifested as a desperate need for reassurance, though he'd never ask for it directly. He would spend hours perfecting a dessert just for you, watching your expression with a hunger that was almost painful. When you told him it was the best thing you've ever tasted, or when you leaned your head against his shoulder after, the tension in his shoulder finally snapped. He didn't need you to know he was jealous, he just needed you to feel, in the silence of your touch, that he was still your favorite person. He would hold you a little tighter, bury his face in your hair, and let out a shaky breath, content to suffer in silence as long as you were happy.
Penguin
Penguin was not a man of grand gestures or loud declarations. His love was a steady pulse, much like the humming of the engines of the Polar Tang. Because he served as one of Law's most trusted officers, he had developed a disciplined mind and a keen eye for detail. He didn't miss the subtle shifts in a room, like the way a stranger's gaze lingered a second too long on you, or the specific, predatory tilt of someone's head when they tried to charm you. His jealousy wasn't a sudden explosion of rage but a slow, cold realization that settled in his chest, a quiet alarm that told him his most precious person was being targeted.
While Shachi might react with loud indignation or dramatic jealousy, when Penguin was jealous, he remained the picture of level-headed composure he always was. If someone was flirting with you in his presence, he wouldn't interrupt with a scene or a shout. Instead, he became a silent, immovable shadow. He would slide into your personal space with a seamless grace, placing himself just slightly between you and the other person. He didn't need to say anything aggressive, he simply chose to exist as a physical barrier, his expression neutral and eyes observant, making it clear that while he was being polite, he was also calculating exactly how much of a threat the other person actually posed.
He was a master of the art of "logical intervention." Penguin didn't fight for your attention with flashiness or passion, no, he made sure to secure it through necessity. If he felt a conversation was leaning too far into flirtation, he would suddenly "remember" a task that required your immediate attention. "The Captain is asking for the inventory reports as fast as possible" or "We need to double-check the navigation charts before we dive." He delivered these lines with a flat and deadpan tone that made the interruption seem purely professional. To you, he was just being his usual, reliable self; to the other person, it was an almost surgical removal from your orbit, executed in a way that left no room for argument.
Beneath the calm exterior, Penguin did actually struggle with a quiet, nagging insecurity. In a world filled with flamboyant pirates, monstrous powers, and larger-than-life personalities, he knew he was rather plain. He was the reliable officer, the one who got the job done on the Polar Tang without fanfare. This made his jealousy an almost desperate force, because he always worried that the stability he offered might be boring compared to the chaos of the Grand Line. This lead him to express his possessiveness through an overwhelming level of care. He would anticipate your needs before you even voiced them, immediately having your favorite drink ready, ensuring your coat was warm, or handling a tedious chore Law gave you so that you can rest. By doing that he was hoping that by becoming the one thing you cannot live without, he rendered all other suitors irrelevant.
After a day of playing the stoic professional who took care of you and was cracking a few jokes here and there all while simmering inside, he would retreat to the crew's quarters and engage in a bout of sarcastic banter with Shachi. He might complain to his friend about the lack of manners of the New World or make dry remarks about the idiocy of the people they had encountered. Shachi knew exactly what this meant, and the two of them would spend an hour teasing each other. This was the usual process, using their banter as a pressure valve to release the jealousy Penguin refused to show you. He used humor as a shield, masking his vulnerability with a layer of practiced wit.
Only in the absolute privacy of your shared space would the mask finally slip. The tension left his shoulders in an exhausted slump, and he became unexpectedly needy. He wouldn't admit he was jealous - he found the admission too vulnerable - but he would wrap himself around you in a crushing embrace. He'd bury his face in the crook of your neck, breathing in your scent as if it was the only thing that can quiet the noise in his head. He didn't need words of reassurance. The physical proof that you were still there, still his, and still choosing the steady love of a man who would move the ocean if he could just to keep you safe was more than enough for him.
Caesar Clown
For Caesar, jealousy was not an emotion more than it was a personal affront to his ego. He viewed himself as the pinnacle of human intelligence and power, and by extension, he viewed you as the most prized acquisition in his collection. To Caesar, you were a masterpiece, the kind of treasure that reflected his own greatness. Therefore, when someone flirted with you, he didn't just feel jealousy; he felt a sense of theft. He didn't understand why someone would think they were entitled to touch, speak or even look at something that belonged to him.
However, Caesar had a very specific image of himself: the Great Genius, the untouchable leader, meaning that he believed screaming in a jealous fit to be beneath a man of his stature. He didn't want to look like a common thug who was insecure about his partner, so he maintained a facade of arrogant boredom. If someone was hitting on you in his presence, he'd simply laugh - his usual loud, obnoxious shishishi - and make a condescending comment about the other person's lack of intellect or status. He would treat the rival like an insignificant insect, dismissing them with a wave of his hand while keeping an arm draped possessively over your shoulders.
The real retribution happened the moment you were out of the room. Caesar didn't do "subtle." The second you left to attend a task, he would corner the offender. Instead of using words alone, he might let a small, concentrated cloud of poisonous gas swirl around the person's feet, just enough to make them cough and panic, or he'd loom over them, his voice booming with a theatrical and menacing intensity. He would lecture them on the sheer audacity of their actions, reminding them exactly who he was and what he was capable of. He wanted them to be terrified of the very idea of looking at you.
His jealousy was deeply tied to his need for dominance. He loved the contrast between the way he treated you and the way he treated everyone else. He would brag about you to others, not out of sweetness, but as a way of showing off. "Look at her! Only a genius like me could have captured such a specimen!" By framing your relationship as a trophy of his success, he warned others that attempting to steal you was essentially trying to rob a god.
Despite his arrogance, Caesar had a hidden, neurotic streak. He was terrified of the idea of being replaced by someone better or smarter, which lead to a habit of constant and subtle testing. He might ask you your opinion on a complex chemical formula just to see if you were still paying attention to him, or he'd demand demand your undivided attention during a rant about his latest invention. He used his brilliance as a lure, trying to ensure you were so dazzled by his mind that no one else could ever possibly compare.
After a bout of secret jealousy, Caesar became unexpectedly clingy, though he'd frame it as the act of "granting you the honor" of his proximity. He'd pull you into his lap while he was reviewing blueprints, his large hand gripping your waist with a possessive pressure. He wouldn't apologize for his behavior or admit he was worried; instead, he'd shower you with expensive gifts like jewelry or rare artifact as if he was paying a premium to ensure your loyalty. He would press a loud, messy kiss to your forehead, his laughter echoing through the lab, completely satisfied that the world knew you belonged to the greatest scientist in history.
