#senkuishigami

you've been in the same school as senku since the start, but you aren't as close to him as yuzuriha and taiju are

you two are friends, yes, but it's more of work/school friends if anything

you and senku share the characteristics of being both straightforward (senku)/blunt (you) and hardworking (and pushing self's limit)

it's generally why the two of you like the other's company because he's useful to you while you're also useful to him

it's also why senku decided to revive you first the next time he'd found more revival fluid (after using what they currently have on ryusui and francois)

it was yuzuriha who was able to salvage some more near the rubbles of the former revival fluid cave

your stone statue stood staring at the direction of where the petrification beam started, your hand flat above your eyes as you looked up in awe. you were one of the few that didn't look to be screaming for fear and running away. it was like you accepted what was going to happen.

as the fluid hit the skin of stone, cracks started forming all over the body. a light passes through each one. and moments later, the stone explodes into fragments releasing the human that was trapped behind it.

you put down the raised hand, placing it on your hip and leaned on one leg as you turned to senku. you gave him a smirk that you used to give him all the time, and he wouldn't say out loud, but he kind of missed seeing it.

"of course you'd be the one to figure this petrification bullshit out, einstein." the nickname rolling off your tongue easily. "now where are my damn clothes you pervert."

after he had handed you the clothes that yuzuriha made for you, the two of you headed back to the kingdom of science for a much needed tour

he gave you a rundown of everything that had happened since he awoken as well as everything that they had re-invented

it was then you noticed an important thing that hadn't been re-invented

of course, being you, you asked senku about it immediately

"you got any other hygienic stuff you re-invented? like tampons, pads, you know, feminine shit," you bluntly asked him to which he was actually caught off guard.

he paused in place as some sort of realization dawned upon him. "why hasn't any of the other women asked about that? most especially the modern ones?" he lets out.

you laughed at his dazed look as you placed a hand on his head. you leaned down towards him, bringing your face closer to his. "probably because, by default, this shit's supposed to be private between women only, and you know, you're a man," you stated. "but i don't give a fuck about that. this shit's biology. it's completely normal."

then you added, "oh also maybe they're probably too shy to ask because, you know, you're a man," you repeated.

senku deadpanned at you. "okay okay, i get it, i'm a man," he says with the roll of his eyes making you chuckle behind your palm.

it was after that that the two of you would work on making feminine products as a side yet priority quest while still working on the perseus

when senku finds himself being done with the work of the perseus for the day, he would go and find you to work on the "pusay quest"—your words not his—and the two of you would work on it from late afternoon until midnight or even later

it would always be him looking for you, and never you looking for him (you never looked for him because you know he'd always come looking for you instead for this "pusay quest")

this would happen almost on a daily, and so people started expecting the two of you to be together after the day's work on the perseus

it gotten to the point that rumors started spreading about the two of you

gen watched as senku walked off after asking where you were. "hasn't he been asking about her since she got de-petrified?" he asked with amusement in his voice. "seems like something~"

"senku?" kohaku scoffs at his words. "he's probably working on something that requires y/n. he did de-petrify her for something—that's just how he is."

"pretty sure i saw y/n come out of senku's place early morning one time," says chrome with a thinking face. "but that could be because y/n needed something from senku. i doubt there's any romance between them. you guys know how senku is, "rOmaNcE iS iLloGiCAl" and also like kohaku said, he probably needed y/n for something."

gen wasn't convinced though, so he asked around.

"those two look good," is all ryusui says, rather confidently too.

"dating?!" lets out nikki with a deep blush on her face. "ah, well..." she covers her face, feeling shy. "they do spend their evenings together intimately as if they were a couple. do you think that's why senku revived y/n?" she then asked.

ukyo looked a bit unsure. "i don't think they stay here, well, within my radius at least, or they're just very quiet," he answered. gen thinks that he was keeping something to himself.

"y/n and senku? they go way back!" exclaimed taiju with a smile on his face, but said nothing more.

"their relationship?" repeated yuzuriha, caught off guard. "well..." she hummed. "they're like rivals, but they also work really well together."

you and senku couldn't care less about the rumors though since you both are too busy with making suitable feminine products, especially since you're the perfectionist and is also quite picky with products

when you and senku had finished the first batch, he thought that was it, but you told him that you'd test them out first, both the tampons and pads since (luckily or unluckily) your menstruation had just started then

that was the start of a long trial-and-error period

it was also then you and senku asked yuzuriha for help when it came to trying to get softer material for the comfort of the "pusay"—again your words—for the tampons and pads

"so this is what the you two have been doing..." she muttered, owlishly blinking at the blueprints and notes and the failed attempts.

"you referring to the rumors about me and einstein over there?" you jerked your head towards senku as you placed your elbow on her shoulder. "those are so funny," you commented. "i mean i wish i was getting fucked during ovulation."

yuzuriha's face exploded into a red hue while senku sighed out loud as he palmed his face, though his ears are tipped red.

senku, at some point, wanted other women to test the tampons and pads out, but you heavily argued against this saying, "can you think of any other women who can be as blunt and as uncaring of social norms as me?"

thinking about it, senku for sure didn't want to deal with any awkward women beating around the bush about how they felt while wearing the feminine products—he wanted straightforward answers which you are already perfectly giving, so he decided against it

although a part of him thinks that you just wanted to keep him to yourself to which he won't complain about as long as it keeps you working

slowly, the two of you got yuzuriha to also start testing them out

she won't really be one of the awkward women who'll beat around the bush—no—she knows how senku is (to the extension, how you are), but she won't exactly be as blunt as you—she'll treat it as if leaving a review on a product

when yuzuriha joined in on the project, you had also asked her to start making proper panties that can comfortably hold a (sanitary) pad for women to which she got all excited about and sped off to her "lair"

that was when you and senku pulled through with more prototypes since time was ticking and you also realized how selfish you were being (with spending time with senku)

with more products being done, slowly you also pulled in other women to "test" the products

"you're embarrassed?" you bluntly called out with an annoyed face. "just think of him as your doctor; he's technically the only proper one we have for fuck's sake!"

the girl that you were screaming at ended up running away. she almost bumps into senku who was walking into your hut. "so what was that about?" he asks.

you huff then cross your arms together. "just some shy girl who heard about our pussay quest. jeez, it's like so obvious that you're also working on this project; i don't why she didn't think so!"

senku chuckles at your mad statements. "since when did you open this project to other testers?" he asked.

"well, i know i said it's best not to drag other women into this, but then i'm getting impatient and then i realized how selfish i've been because i just wanted this project to be a you and me kind of thing, you know?" you explained. "like... like the old times..." then you add in a mutter.

senku's eyes on you softens. "you're my partner, y/n. that's never going to change even thousands of years had past." he smirks. "besides, what use could you be when you're not beside me?"

you stare at senku with an open mouth, shocked beyond your years. "holy shit senku. that sounded so bad, but i know what you mean and that was probably the most romantic thing you could ever tell me." you start laughing.

senku's ears turn slightly red. "shut up!" he grabs your arm and drags you out of your hut. "we've got work to do!"

after that intimate moment between you two, you both went into this "locked in" mode to try and finish the feminine hygiene products which eventually got you two to the final four (which were also voted by the women who became part of testing the products)

nearing the end of the perseus project, the was when you decided to "release" the feminine products for the women of the island and village

"can all the women gather up!" you announced on top the makeshift stage that gen asked to make that one time. the spot in front of the stage slowly forms a crowd of women (and the curious men at the back). "okay, so me and senku got to working on another project; a side project, if you will."

senku then walked on stage, pushing a cart with the final four products. the modern time women recognized them immediately and started cheering in their own silent ways.

"to the women from the modern times, you may immediately recognize what these are; while the women from after stone may not," you introduced. "welcome to the era of being able to use proper products during the red moon! these products are capable to catching your blood either while being attached to your underwear or directly inside of your pussay." picking up a pad, you raised it up in the air. "this is called a sanitary pad or napkin but most people use either pad or napkin. with the new line of underwear made by yuzuriha, you can easily attach it there like so—"

and then you continue to introduce each product with demonstrations (of course, for the tampon, you used a similar model made by senku)

after this pussay quest, you didn't necessarily became one of the "main" people like with important jobs like senku and ruisui—instead you ended up having this overseer role that allows you to just complain and "guide" the main group into doing things properly

aka a role that senku gave you in a whim just so that he can keep you next to him, especially when you have a need to start another side project quest