For the OP Fic for all prompt - "One of the Strawhats loses their treasure."

Hat

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The day began like most others; the crew of the Going Merry awoke refreshed ready for a new day of adventures and fun and general pirating. The cook and the swordsman had their first fight of the morning, which was customarily halted by the irate navigator, and the Captain inhaled four crew member's breakfasts in one fell swoop.

And yet it was alarming how this normal day spiralled into something different.

With a flutter of petals, a mouth appeared on the table (scaring Usopp half to death, as he was about to set his mug there at the time), and in her most polite of ways, Robin gently informed them from her lookout that they were approaching land.

Hooting with glee, Luffy, Usopp and Chopper catapulted to the deck, to watch the ever nearing speck of shore. The remaining crew members followed, and Nami lifted her log pose to her face and squinted in concentration.

"Right on Course, we should be there in a few hours."

Luffy Cheered at the thought of adventure, Sanji turned back to his kitchen to check the stock, and Usopp began muttering about all the new provisions he needs.

Chopper was about to tell his nakama all about the new books and supplies he was going to get, when he felt a strong gust over his fur, and a heavy tugging at his head.

The crew froze and watched the tall pink hat get buffed up by the wind, and carried towards the island like it was a sakura blossom on the spring breeze.

Chopper watched it in detached shock. His hat flew away, and his head felt cold. He didn't dare think of doctor. He was a strong pirate now.

The crew watched in nervous silence at the trembling doctor, and Zoro gently called out.

"Oi, Chopper? You okay?"

The reindeer burst into tears and ran into his doctor's office.

Zoro tried to speak to the upset animal for some time, knocking on the door as gently as possible and asking the reindeer to open up. When Chopper would wail and cry something so wrapped in tears he couldn't understand, so Zoro sighed in defeat and went to nap.

Sanji tried to tempt him out with sweets, but even sweet things weren't more important than Doctor Hiriluk.

Nami promised candyfloss when they reached shore, if he just let them talk to him, but even Chopper knew it was never best to hold Nami to anything she promises involving money.

Ussop, knowing Chopper well enough to realise he wouldn't let anyone in, simply weaved tales through the door, about brave reindeer superheroes that defeat evil geniuses and save the day for everyone and though it was good there was no way it cheered him up at all, bastard.

Robin broke through his guard-point like defences, using her powers to grow a hand out of the wall. She patted the fur on his arm comfortingly, which calmed the crying creature somewhat. When she sprouted an ear, Chopper curled up to sleep and whined to her.

"But Robin, it was Doctor Hiriluk's."

With that, the reindeer was in grief induced sleep, and Robin was heading towards her captain in concern over her distraught friend.

Chopper woke up feeling refreshed, if not still upset over his loss. He could hear the caws of gulls, they must be nearing the dock, and the shouts of the crew.

A shot of guilt went through his body. He was so upset, he didn't realise how worried they were for him. The wanted to help and he shut them out.

The door creaked as Chopper nervously peeped out of it, and he watched the crew prepare for docking at a loss.

Nami smiled at him as she shouted at Luffy and Ussop to hoist the sails, which they were already doing, but now at double time after her orders.

Sanji was steering them in, cooing to Robin that he doesn't need help and she should just relax.

Steel glinted as Zoro hoisted the anchor and prepared to drop it in the sea. The way he moved it with ease always inspired the small doctor. The swordsman gave him a wry smirk as he saw the doctor move over to the railing.

Chopper looked at the island half in wonder and half in fear. It was big and bustling, and suddenly without his Hat he felt very exposed.
He felt a thud next to him, and seconds later a scratchy object was placed between his antlers.

Raising his hands tentatively, Chopper felt the unmistakable scratch of straw, and looked up to see his Captain, black hair flying free, grinning at him without abandon.

"You look after it Chopper, until we get yours back, ne?"

As he watched his captain rocket towards the unknown, calling out for his hat, Chopper cried tears of joy and gripped the object on his head.

After all, his wasn't the only hat that was important, and he wouldn't dream of losing this one.

-.-.-