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Green Around The Gills

Summary:

In which Geralt’s plant-based mutations affect a lot more than Jaskier originally realized—not that he had any expectations in particular.

A continuation of my Onion!Geralt AU, sequel to “It’s Onion…no really, it’s onion”—the AU should be fairly self explanatory, but I do recommend reading that one first.

For those who just want to start the fic, the main premise of this au is that Geralt’s second round of Grasses, with extra experimental mutations, were a little bit heavier on the “experimental” side than they’re usually portrayed. Geralt is part plant (though it doesn’t show in his physical appearance). This is why he smells like onions.

5+1–five times Geralt took a potion that enhanced his plantlike traits, and one time he didn’t have to

Chapter 1: Budding Trust

Notes:

Hey guys, welcome back to the Onion!Geralt AU! If you’re new and you haven’t read the original, feel free to go check that out first if you’d like!

I’ve expanded on the AU itself a bit further now, because I wanted the plant mutations to actually do something, and as I was brainstorming, I realized that this was perfect for a 5+1, since there’s several different plants involved. Each plant gets its own potion, and each potion gets its own chapter. I will post the first two chapters together since the first chapter is an introductory scene, but other than that, I’m going to try to release the rest of them with a few days in between, though I’m not sure what the interval will be yet.

In the meantime, enjoy! Warnings will be posted at the beginning of each chapter if needed.

This is kind of a mashup of different versions of canon, so don’t go into this expecting one specific characterization. I’m most familiar with the characters as portrayed in fanfiction, but I’ve also watched a small amount of gameplay and read a few chapters of The Last Wish, so that’s certainly a part of how I personally tend to portray them, too. Don’t be surprised if one moment they’re acting like they’re from the tv show and the next they’re acting like they’re from the book.

(See the end of the chapter for more notes.)

Chapter Text

Ever since the day when Geralt, the White Wolf, had confessed to Jaskier that his strangest mutations were, in fact, not of the monster or animal variety, Jaskier had found himself watching the Witcher even more closely than was his wont. Not because he was disconcerted, no indeed! But it wasn’t every day that one discovered their best friend was part plant, and he found himself with an unfortunate combination of greatly heightened curiosity counteracted with a rare sense of tactful caution towards approaching the topic.

He was certain that Geralt had noticed his increased scrutiny, and equally certain that the man knew exactly what was causing it. Thankfully, he didn’t seem too put out by this; if anything, he seemed rather amused, and surprisingly tolerant of the whole thing, which was a relief since Jaskier wasn’t sure he’d have been able to stop even if he wanted to.

Even so, Geralt had worn his best ‘purposefully unreadable’ face when he’d brought it up in that inn all those weeks ago, his tone too casual and his shoulders too straight, which told Jaskier that he’d been more worried about what his friend would think than he was letting on. When it became clear that Jaskier wasn’t going to run away screaming, his shoulders had begun to relax, but it wasn’t until he’d refused to pass the rose oil (roses and onions, really!) and it became clear that Jaskier wasn’t going to make a big deal about it either that he really seemed to settle. Jaskier wasn’t an idiot, nor was he unobservant; it had taken a lot of trust for Geralt to broach the topic, and rather a long time for Jaskier to earn it, and the last thing the bard wanted to do was to jeopardize that trust by being careless. Especially with the way Geralt seemed to be testing his sense of normality these past few weeks.

The thing was, ever since they’d had that little talk, Geralt had taken to letting his more plantlike traits slip into his behavior—things Jaskier hadn’t even realized the Witcher had been hiding until suddenly there was another new odd behavioral quirk that he vaguely remembered the man doing subtly off and on throughout the years, now being taken to an extreme. He’d started doing things like taking off his boots and wriggling his feet into the dirt to “check the nutrition of the soil” (which would have been strange enough already, except sometimes if the soil was rich enough, he’d actually scoop some of it up and sprinkle it into his serving of food), stepping outside shirtless the morning after a rainy day and standing motionless in the sun for a while, reaching out and touching trees and flowers whenever they made camp—ostensibly to check for dangers, as if being part plant gave him the ability to literally talk to them—

And yet, bizarre as these things were, nothing made Geralt’s differences from a normal witcher more stark than when he first started pulling out the potions. Not just any potions—not the ones Jaskier had seen and familiarized himself with by osmosis due to how often Geralt used them over the years—no, these were the potions that were tucked in underneath those, the ones that had earned him nothing beyond a curt, dismissive grunt the few times he’d asked.

The other potions were designed for the normal concoction of mutagens, but these…these were the plant potions. All things considered, he could understand why Geralt had never let Jaskier see him use them before. Some of their effects tended to be rather…strange.

…And most of them turned the man green. Geralt was never living that down.

Notes:

One thing that I find worth mentioning here is that with one concrete exception, most of the plant potions can’t be taken alongside Geralt’s other potions, which is part of why he doesn’t use these potions as often. The other reason is, each potion changes his appearance to reflect the corresponding plant in some way, which means he has to at the very least wait for the visual effects to wear off before he can go get paid—wouldn’t do for the humans to be freaked out even worse than usual by the strange green man stomping through town.

This is why he hasn’t taken any of these potions around Jaskier (yet); they’re even stranger than the ones that make his eyes go black, and that at least is easily hidden by wearing a hood.

As always, my ideas are free game to other content creators! Just let me know you wrote something based on my ideas so that I can read it too! :P