#i just wanted an excuse to write sanuso and the strawhats. sue me.

[redriotinggg]

When Sanji is bitten by a spider that has eaten the Cupid-Cupid Fruit, the Straw Hats learn there is only one way to cure his illness.

A genuine love confession.

There’s only one crewmate capable of the job.

(read on ao3!!)

—

The Straw Hats have stopped at a small summer island to gather supplies, stock up on necessities, and do any repairs to the Sunny.

When the bulk of the hard work has been done, their captain insists on a bonfire, having found a perfect clearing in the forest.

Sanji’s by the grill, cooking up plenty of burgers, hotdogs, kebabs, and other barbecued treats to fill his crew’s voracious appetites.

He happily watches his crew enjoy their afternoon—Brook’s violin emitting a joyful tune, Nami and Robin engaged in an intense game of cards, Franky enthusiastically sketching something onto a large page, Zoro fast asleep on the grass, and Luffy, Chopper, and Usopp running around as they play their own variation of tag.

Perhaps Sanji’s gaze is drawn to one of his crewmates in particular, following the flow of his curly hair, smiling at the sound of his laughter.

Perhaps. Sanji won’t tell.

“Woah! Look at that!”

The rowdy trio’s game of tag comes to a halt at Chopper’s cry. Luffy and Usopp look to where the reindeer is pointing, their eyes lighting up when they spot the thing that caught his attention.

“Cool!” Luffy begins to race over, but he’s stopped by Usopp.

“Wait! Don’t run, you’ll scare it!”

The trio carefully make their way over to a nearby tree, their attention grabbed by a fairly large spider.

Sanji shudders when he sees the creature. He looks away, focusing on the food. He is not interested in the further details of their exploration.

Luffy, Chopper, and Usopp fawn over the spider, speculating on its species and origins.

“It’s markings kinda look like hearts,” Usopp observes. “They’re even a pinkish-red colour.”

“Aw, so cute!” Chopper squeals.

“I’m gonna name it Cupid!” Luffy declares. “That guy’s in charge of hearts ‘n stuff, right? This lil' girl could be his pet or something,” he laughs.

A bit later, Sanji calls out to them. “Oi, get your asses over here, the food’s ready! And wash your hands if you’ve been touching bugs!”

Saying their goodbyes to Cupid, the boys rush over to claim their dinner.

The crew happily enjoys their meal, thanking Sanji with wide grins that only get wider when he presents them with dessert.

As the evening turns to night, the crew wind down, packing away their belongings and making their way back to the Sunny.

“Are you sure we can’t stay and camp?” Luffy whines. “It’s like, the perfect night for it! We've got the perfect spot!”

“No,” Nami denies flatly. “We didn’t bring the stuff for it and it’s already getting late. Plus, I want to sleep in my own bed. Now hurry up and get going! Franky! Turn on your flashlights, I can’t see!”

“One set of nipple lights, comin’ up! Ow!”

Usopp and Sanji take up the rear, picking up the last of Sanji’s portable kitchen gear. The chef is happily listening to the sniper’s latest tale when he feels a pinch on his ankle.

“Ow! What the hell?”

“Sanji! Are you okay?”

“Yeah. I think something just bit me.”

Usopp looks in the grass, trying to find the culprit. When he does, he gasps. “It’s the spider from before! Cupid, why’d you go and bite Sanji? That’s not nice!”

“‘Cause it’s a good for nothing insect,” Sanji grumbles.

“Actually, it’s an arachnid—”

“You better not have poisoned me, you stupid bug,” Sanji yells at the spider, which scurries away.

“It’d be venom, not poison.”

“You are not helping!” Sanji snaps. “What is this, a Robin impression? Stop with the unnecessary bug facts, this shit hurts!”

“Does it really? You should get Chopper to look at it as soon as we get back to the ship. Here, gimme your stuff, I’ll carry if for you.”

“I can carry it myself, asshole. I’m not that weak.”

“Really? ‘Cause if you’re in pain, the Great Usopp would be more than happy to carry you back to the Sunny.” Usopp smirks and flexes his muscular arms, sending Sanji a wink.

Sanji pretends like his heart isn’t trying to escape his chest and throw itself at Usopp’s feet.

Internally, Sanji is a mess. Externally, he rolls his eyes and hefts his baggage further in his arms.

“You do two push-ups and think you’re a strong guy now, huh? C’mon, let’s go before any other bugs try to make a meal outta me.”

When they make it back to the Sunny, all of their things put away, Usopp continues to hover by Sanji, his concern rising with each passing moment.

“Are you sure you’re okay?” Usopp asks. “You’re all red. You shouldn’t be sweating this much.”

“‘M fine,” Sanji mumbles. The way he sways on the spot doesn’t do much to help his case.

Usopp holds him steady, in full crisis mode as he watches the usually stable chef falter. He hoists Sanji in his arms, dashing to the infirmary. “CHOPPER!”

“What happened?” the doctor asks. Usopp puts Sanji on the bed and recounts the tale.

By now, the rest of the crew has come to investigate the cause of the commotion. They all stand in the doorway, shocked to see their crewmate suddenly so ill.

“It’s only been like 20 minutes! Why does he look bad already? Sanji, don’t die!”

Usopp’s dramatic cry unfortunately has some merit. Sanji doesn’t look well. He is the complete opposite of the perfect picture of health he was less than an hour ago. In just a few minutes, Sanji seems to have lost all of his energy. He’s flushed and sweating, breathing heavily and brows furrowed as he fights some type of pain. Even his usually shiny hair is limp and brittle-looking.

Usopp’s heart positively breaks at the sight.

“I can’t make him a proper anti-venom without knowing exactly what type of spider that was,” Chopper states. He clicks his tongue as he looks at the inflamed, red bite mark on Sanji’s ankle.

“Brook, you help me get Sanji out of this suit. Everyone else, get out so I can treat him. Now!”

The rest of the crew gather on the deck, concern on all of their faces.

“Usopp,” Robin says, pulling the sniper from his worsening spiral of anxiety. “You said Sanji was bit by the same spider that you saw in the forest, right? Draw me a picture. We can use it to get information from the locals.”

Usopp nods. He runs off to the galley and grabs a sketchpad nestled between Sanji’s collection of recipes and cookbooks. Before long, he’s got multiple drawings of the spider, complete with colours and accurate depictions of its heart-shaped markings.

Franky and Nami go to the hospital to ask about an anti-venom while Luffy, Zoro, and Robin go ask around town.

On the Sunny, Usopp paces back and forth, biting his nails and their beds away to nothing as worry engulfs him. He peeks into the infirmary, heart breaking a little more every time he catches a glimpse of Sanji’s pained face.

“Sanji will be alright,” Brook assures him when he exits the room. “He’s stable for now. Our cook is strong. He’s got the best doctor caring for him and crewmates desperately seeking out information. He’ll pull through.”

Usopp tries his very best to believe him.

The rest of the crew returns to the Sunny in less than an hour. Everyone, except Sanji, who’s resting in the infirmary, gathers at the kitchen table.

“Turns out that our little spider has eaten a Devil Fruit,” Robin tells them. “Everyone in the area is familiar with the spider that has eaten the Cupid-Cupid fruit.”

“Wait, the spider is actually related to Cupid? That’s hilarious! I’m like a fortune teller! Hahahaha! Ow!” Luffy rubs his sore head, pouting at Nami.

“A bite from the Cupid Spider can do multiple things, depending on who is bitten," Robin continues. "However, it only causes illness in someone who has a requited love but has not actually expressed their love. To save Sanji, whoever is in love with him must tell him the breadth of their true feelings, lest he remain bedridden forever. Or worse.”

The crew sits in silence for a moment, reflecting on the information.

“Alright, who’s in love with Sanji?” Luffy demands.

All eyes go to Usopp.

He is so red in the face Chopper is concerned he'll pass out. His eyes are so wide Zoro wonders if they'll pop out of his head.

"What are you waiting for?" Nami cries. "Get in there and confess your love so Sanji gets better!"

"I-I-I-I-I-I'm not—"

"Oh, please, this is not the time for your anxious, denial bullshit! Go fix Sanji!"

"Can't we just kill the spider instead?" he suggests meekly.

Luffy and Chopper gasp in betrayal.

"That would be a bad idea," Robin warns. "That spider is very well-respected on this island. Causing it harm would no doubt incur the wrath of all the locals. There is nothing you can do but speak from the heart."

"You got this, Usopp-bro! Just tell Sanji how you feel! It'll turn out super!"

On stiff legs and with wobbly knees, Usopp leaves the galley and makes his way back to the infirmary, deaf to the sounds of his crew's encouragements.

Despite his desperate pleas to the universe, Sanji is awake when Usopp steps inside. He looks even worse than before. His skin is pale, covered in a sheen of sweat. His eyes are lidded and he's got bags under them like he hasn't slept in days. But even still, a smile lights up his face when he sees the sniper.

"Usopp," he says, voice quiet and raspier than usual. His smile is no less bright.

"Sanji," Usopp returns, taking a seat next to the bed. "I've got news. So, turns out that the spider that bit you has a Devil Fruit power."

Sanji scoffs. "Of course it does. Just my fucking luck. So, what? It ate the Sick-Sick fruit and now I'll feel like shit forever?"

Usopp chuckles drily. "No, nothing like that. We can actually help you pretty easily. Or, I can, anyway. I just... I have to... to..."

The sniper closes his eyes as a fresh wave of anxiety washes over him. He can't do this! It's too scary! But he has to.

How many times has he been in this position? Forced to watch someone he loves suffer from an illness, unable to do anything but try and distract them from their pain.

This time is different. Usopp can stop this. He can stop Sanji's suffering. All he has to do is be honest.

Well, best to rip off the band-aid.

Taking a deep breath, Usopp grabs Sanji's clammy hand in both of his. "I love you!"

"I-I've loved you for a long time, Sanji," Usopp admits, and the words start flowing, unable to stop. "I don't know when exactly it started, but I know that I do because I think you're so amazing! You're so cool, and strong, and talented. I love that you act all grumpy but you're actually extremely kind and considerate. I love spending time with you! I love it when you tell me stories about Zeff and the Baratie. I love that you always ask me questions when I'm telling you about something because you make me feel heard. I love that you always wrap your arms around me when we party. I love it when you smile at me and dance with me.

"I love how you look in the early morning and when the sun is setting. Well, I love how you look all the time because you're so gorgeous it isn't fair! All handsome and pretty at the same time. You dress nice, and you smell nice, and you make me food and protect me—! Sanji, I love you!

"I'm sorry it took a stupid spider to force me to say it but I lov-"

Usopp's speech is cut off as desperate lips meet his own. He melts into Sanji's embrace, returning the kiss with all he's got. His heart is beating so fast he thinks it might pop right out of his chest, but nothing could possibly take him away from this moment.

When they pull apart, foreheads resting against one another, Usopp is taken aback by Sanji's appearance. He looks as healthy as ever, save for his very intense blush. But his eyes are shining and his smile is hopeful and adoring.

"Do you mean it, Usopp? Do you really feel that way about me?"

"I do. A-And you? D-do you feel...?"

"The same," Sanji promises. "Everything that you said, I feel the same way. Usopp, I love you! I—did you really just cure me with a love confession?"

Usopp blinks, and then he bursts out into laughter. Sanji joins him, the two holding one another as they laugh at the absurdity of the situation, their hearts full to bursting.

"Anything is possible on the Grand Line," Usopp reminds him. "Especially for the number one lover on the seas, the great Captain Usopp!"

"Number one lover, huh? I don't know if I believe that." Sanji pulls Usopp in close, whispering into his ear. "I think you'll have to show me."

"T-that can be arranged."

Usopp leans in and Sanji goes to meet him, lips pressing together again, and again, and again.