Prompt: from kellermarie who wanted Sanji to be stuck with looking after Zoro. And, of course, Zoro is being difficult.

Getting used to an otter in place of the shitty mosshead was very difficult for Sanji. His snide remarks didn't matter now that Zoro couldn't snap back and the blond felt a little more than stupid at the notion of being seen arguing with an otter.

Luffy had almost killed Zoro twice in his bone crushing hugs and was now avoided at all costs by the little otter swordsman. Chopper had yet to find a cure but at least he could understand Zoro to some extent. Sanji and the rest of the crew who couldn't speak otter had come to recognise body language as a means of Zoro conveying his emotions. If his ears were flattened back against his head he was startled, if his snout was wrinkled and his front teeth bared then he was angry, and if he wriggled his nose and ears and swapped from foot to foot then he was curious.

Sanji was very familiar with the anger signs and was currently facing it now. The beautiful Robin had suggested that Zoro go swimming in the aquarium to get a feel for that environment which he was now designed for and the ever lovely Nami had ordered him to take Zoro there because only him and Luffy were nearby and she didn't trust the rubber idiot not to nearly kill him again. The only problem was that Zoro was an indignant, vicious little bastard rat with a bite that surprisingly hurt. A lot.

He'd already sunk those teeth into the cook's wrist with a shrill squeak and smacked at the blond's ankles with his tail that was heavy and shockingly powerful. So now Sanji was crouched with a pair of old oven mitts on, facing a hissing marimo otter which he had backed into the corner of the aquarium room.

"I thought otters were supposed to like swimming!"

Zoro chattered his bared teeth at Sanji and thumped his tail on the wooden dived, ignoring the shrieks of outrage as his mitt cladded hand closed around a long chubby and warm body. He held Zoro out away from him to avoid the claws and little teeth. Zoro squealed and spat and wriggled left, right, and centre but the blond's grip was relentless as he carried the struggling otter to the top of the tank.

"Come on, shitty marimo rat. You might like it once you try it." He encouraged.

Zoro clawed furiously at the mitt.

Sanji sighed before nonchalantly throwing Zoro in. The otter squeaked in surprise before splashing face first into the water and submerging ungracefully. This otter was Zoro alright. No other otter could be so shit at the thing it was designed to do.

Suddenly Zoro's head popped up over the surface and the little otter floated up onto his back, front legs folded over his heaving little scarred chest and belly.

"See?" Sanji said, "Not so bad."

Zoro chattered, this time quite happily as he sloshed his tail around and snuffled a little.

"No reason to be such a whiny little baby about-" Sanji spluttered as a spurt of water hit him in the face. He coughed and wiped the droplets from his eyelashes to see Zoro chattering happily to himself with a wicked gleam in his one eye. Sanji didn't know otters could even look wicked, but Zoro managed to pull it off very well.

"Did you just-?"

His unasked question was answered when Zoro flicked his tail and another wave of water slapped up Sanji's face and drenched his shirt. The blond grit his teeth as Zoro chirped in what suspiciously sounded like laughter.

Was it possible to drown an otter?