#keinatsubj

[runicmagitek]

My Sun, My Moon, and All My Stars

An Unofficial 13 Sentinels Fanbook

🍔 8 fanfics with illustrations (rated T) 🛸 128 color pages (including front/back covers) 🤖 A5, PDF

A year ago, @garmmy and I collaborated for @polyshipweek prompts in 2023 to spread the keinatsubj love. Today, we are celebrating the anniversary of Them with a compilation book! Everything is in one file, THERE ARE NEW ARTS, and it's 100% free! If you love these three and want a cozy read, please check it out!

🌠 garmmy.itch.io/my-sun-my-moon-and-all-my-stars

[garmmy]

keinatsubj doodle log, contains 13 sentinels spoilers(+headcanons) under the cut. thanks!!

[runicmagitek]

k, r, y for keinatsubj?

AAAA my sweeties 🥰 thanks so much for the ask!!

k = knowing; who can read their partners like a book? is there anyone who’s got their walls up, even around their partners? Keitaro and BJ are equally perceptive, both with Natsuno and each other. Natsuno also has a tendency to bottle things up, but she's bad at hiding her true emotions (and the boys gently call her out on it). But BJ is probably the one who is the best at hiding his emotions. He's got a lot to process once they welcome him into their home and he doesn't want to worry them or feel like a burden (they remind him he's not with lots of snuggles).

r = romantic; is anyone a bit of a sap for their partners? Keitaro! He might not be busting out grand displays of romantic affection, but he always articulates what's on his mind and it takes Natsuno by surprise each time he's like that (BJ is similar, but also more blunt lol). Keitaro also goes out of his way to do things for Natsuno and BJ, like chores around the house or cooking their favorite meals just because or crafting handmade gifts for their birthdays.

y = yearn; who misses their partners the easiest (ie, calls them to hear their voices when all they’ve done is run to the grocery store)? They all do, in a sense. Keitaro misses Natsuno's voice a lot and loves hearing her chat. Natsuno gets really anxious if BJ is even a minute late to something they agreed upon. BJ probably gets hit with this the hardest, considering everything he's been through, and gets scared if he wakes up and they're not in bed with him, but he's the one who overslept and they're just chilling in the kitchen. They're kind of a clingy trio, but they love each other oh-so very much 🥺💕

[runicmagitek]

So, what was it that drew you to KeinatsuBJ? 👀

omg not me trying to be Completely Normal while rambling about Them. Putting this under a cut, because MASSIVE SPOILERS for the game, but also AAAAAAA THANK YOU FOR THE ASK!!!!

I have always headcanon'd that BJ is Natsuno's first love. She's immediately attached to him and while it starts off as a "hey we're friends!" bit, it's VERY evident (to me, at least lol) that this lil guy means so so SO much more to Natsuno. And there is so much in the game that just leans into how much Natsuno cares about him. One of her MVP lines post-battle is something to the effect of "BJ! I did it!". Her last pilot skill is about BJ. Her route wraps up with BJ's death after he gives her his Sentinel. Even when she reunites with him in the simulation during the epilogue, she cried upon realizing he was back in her life.

And when you as the player realize who BJ actually is? And the backstory with 2188!keinatsu??? AND SHE ALSO STARTS HAVING FEELINGS FOR KEITARO??????? Ho boy, I'm always a sucker for lovers reincarnating and falling in love again and this ship just takes that idea and runs with it.

So while Natsuno doesn't have as many moments as Keitaro does with pining for her, she absolutely adores BJ, which… even SHE kind of notices during the final battle when she remarks to Keitaro that HE reminds HER of BJ. So in a sense, she's already falling for Keitaro. Just… you know, the previous version of him.

And I totally get this being squicky for some folks (it doesn't really faze me - it's fiction and clones like this aren't real), but I find the idea of Keitaro, the guy who is so ready to ignore his needs and sacrifice himself for the sake of everyone else, learning to love himself by… Literally Loving Himself… to be really sweet. But even if you take that out of the equation and approach it as a more V-shaped poly ship, Keitaro KNOWS BJ likes Natsuno. He GETS it, because it's HIMSELF. BJ confesses to him that he's fond of Natsuno and Keitaro just does not blink at that ever. And it's really sweet, as well, knowing that every version of Keitaro is drawn to Natsuno in some way. And vice versa too!

And then you look at the epilogue and they restored BJ in the simulation. One of the first things Keitaro mentions to him is if he'd like to ride in his nanomachines to see the outside world. And Natsuno immediately offers the same thing, as well. It's so sweet omg!!! They still remembered him!! And it's almost as if they had discussed this before diving back in???? 😭😭😭 and poor BJ is overwhelmed and just says "let me think about it" BUT ALSO NATSUNO AND KEITARO ARE OFF TO SEE HER PARENTS BUT ALSO BRING BJ ALONG TOO AND WHAT IF BJ GOT TO BE PRESENT VIA NANOMACHINES FOR THEIR WEDDING WHAT IF ALL THREE OF THEM GOT MARRIED AND WERE HAPPY TOGETHER I JUST JSDAKFJSDKFJKDSJFKDSJFKDSAJ

~cough~

With what Gouto and Ryoko mention with possibly bringing AIs into the real world via cloning tech, I imagine their initial test runs using the 1 loop ago gang would be ideal, seeing it would use existing DNA from the compatibles. And the thought of Natsuno and Keitaro bringing BJ back and he can have a body again and actually live after being so resigned to dying??? Oh my god I'm so soft for this.

But yeah. Lots of feels and thoughts for these three. Natsuno clearly loves both boys and I think she deserves both post-canon. And BJ and Keitaro would get along really well and spoil their wife. I just love Them and want them safe and happy together forever 🥺🥺 HOKAY THANKS FOR COMING TO MY TED TALK 💖

[runicmagitek]

Simmering (keinatsubj - 13 Sentinels: Aegis Rim)

(( day 7 of @polyshipweek - shopping trips turned... accidental dates?? the best! art by @garmmy and fic by me. enjoy! ))

A mixture of songbirds and distant chatter filled the air as Natsuno departed the athletics building. She paused to stretch and savor the spring air sweeping over her. Soon enough, all of Sakura High would trade their current uniforms for summertime versions. Natsuno smiled, but it wasn’t due to the prospect of new outfits.

“Summer’s almost here,” she mused out loud, “which means I need to start planning my summer break movie list!” A tiny squeal swelled on her lips. “Oh, I can’t wait! Got to ask my folks for cash, though. Maybe if I do a bit better with my tests, then I can earn some extra—”

“Natsuno.”

She peeked down. BJ wiggled in her gym bag until his head poked out. Students and fellow athletes had departed for the day, but someone could’ve been watching from the shadows and spotted him. The Men in Black continued to hunt down BJ, after all.

“I know, I know,” she grumbled. “We have to go to the gate. Don’t need to tell me twice.”

At least he didn’t argue and reverted to his hiding place. As for Natsuno, she jogged ahead. If she maintained pace, then they would reach Tokisaka Shrine before sundown and time travel to—

“Natsuno-san?”

She skidded to a halt, almost tripping on the sidewalk. Sunlight blinded her while she spun around, but there was no mistaking the figure standing by the school entrance.

[read more on AO3]

[runicmagitek]

Off-Road (keinatsubj - 13 Sentinels: Aegis Rim)

(( day 1 of @polyshipweek - because road trip shenanigans are the best! art by @garmmy and fic by me. enjoy! ))

“Are we there yet?”

An excellent question. One that Keitaro possessed no answer for.

BJ sighed from the passenger seat, eyes glued to the floating monitors mapping their route. Or at least an estimated guess, based on satellite photos of the terrain. But those were thousands of years old, before all three of them came to life in the simulation, let alone the real world.

“That’s the fourth time you’ve asked,” BJ grumbled, “and the answer is still I don’t know.”

Keitaro focused on driving the hovercraft—one of the few solar-powered vehicles in the facility, reminiscent of piloting a Sentinel, though without requiring nudity—but glimpsed in the rear-view mirror. Natsuno sprawled out in the back seat, fashioning the space like a pillow fort in preparation for a movie night. He couldn’t blame her; they started their road trip at dawn and he counted on one hand the times they pulled over for a break.

Then again, it was Natsuno’s idea. It almost always was.

[read more on AO3]

[runicmagitek]

Nurture (keinatsubj - 13 Sentinels: Aegis Rim)

(( day 8 of @polyshipweek - in which garmmy and I grabbed a previous day's prompt and went "nope there was nothing accidental about this actually" 🤣 art by @garmmy and fic by me. enjoy! ))

Heavy footsteps and whimpers filled the hallway. Keitaro paused amidst his sketching in the study; he swore he caught a blur of Natsuno past his reading glasses. A door slammed shut seconds later, no doubt the one for the bathroom.

“That’s the third time this week,” BJ murmured beside him.

Keitaro’s eyes lingered in the hall, where echoes of Natsuno’s utmost discomfort permeated the area. “We should check on her.”

“And get chewed out again? It’s best to give her space. She knows to come to us if she requires support.”

“I know, but—” He sighed and returned his head to center. “I’m worried.”

BJ rubbed his back. “So am I.”

But why sketch new building designs for the colony’s farm when their wife was locked up in the bathroom, utterly miserable? Was it something we ate? Keitaro wondered, tapping his pencil against the drafting desk. I could cook different dishes if she’s unhappy with our meals lately. Or it was stress from the... well, everything. Even years after they won against the Deimos and woke up to the real world, there was always work to be done. For humanity’s future, of course, but that didn’t make the reality of their situation any easier to digest.

Seconds crawled on like years. Keitaro and BJ said nothing to one another, though glanced into the hallway more often than not. By the time Keitaro finished a page of sketches, the distinct click of a door unlocking pierced the silence.

Keitaro and BJ abandoned their work to rush out of the study.

[read more on AO3]

[runicmagitek]

High Score (keinatsubj - 13 Sentinels: Aegis Rim)

(( day 4 of @polyshipweek - featuring possibly my favorite prompt! had too much fun with this one ehehehe >:3c art by @garmmy and fic by me. enjoy! ))

“Keitaro-kun, look! Up ahead!”

Rows of vast buildings loomed over Ashitaba City, glittering in neon against the night sky. Sector 2 wasn’t much different than Sector 4—simply bigger and grander, like all the sci-fi movies she grew up on. But the future still maintained traditions, for the urban roads cleared the way for vibrant decorations, food stalls, and festival goers.

Natsuno ran half a block towards the thriving, glowing street. She always anticipated summer festivals growing up, loving the fireworks and delicious treats alike. And between the real world lacking those celebrations and the simulation gradually rebooting, it served as an excellent excuse to sneak into the growth pod room and return to the digital world.

Especially when a certain someone offered to make a night out of it.

She slowed her steps and blushed. It wasn’t their first rendezvous with BJ in the simulation, but this felt different. Natsuno spent extra time picking an appropriate outfit; her yukata’s fabric exemplified summer with its blue and orange sunflower pattern against pure white. She even chose matching hair accessories for the occasion. Super cute, Natsuno mused in the liminal space between reality and the simulation, akin to a video game’s character creation screen. Wish I had something like this growing up!

But her attire wasn’t the only reason for the extra flutter in her chest. It was also....

Well.

[read more on AO3]

[runicmagitek]

Snug (keinatsubj - 13 Sentinels: Aegis Rim)

(( day 3 of @polyshipweek- featuring the top-tier trope of bed sharing! art by @garmmy and fic by me. enjoy! ))

“If you’d like to,” Natsuno said the first evening he returned home with them as a human, “you can sleep with us, BJ.”

He almost choked on his tea upon hearing that.

“N-Natsuno-san,” Keitaro reasoned, “perhaps we should give him some space? No need to rush anything.”

Her lower lip jutted out as she huffed. “But... if we’re all living together, then—”

“I appreciate the offer,” BJ said, clearing his throat, “but I’d like some time to... well, acclimate.” He raised a hand, flexing human fingers he never thought he’d see or feel again. “It’s a lot to take in. Forgive me.”

“No, it’s okay,” she replied. “I didn’t mean to force you into anything.” Natsuno scooted closer and caught his hand to rest upon her chest, where her heart thumped to meet his fingertips. “But we love you, BJ. That’s why we brought you back. Having you here?” She smiled and squeezed. He swore her heart skipped right then. “It finally feels like home for us, too.”

[read more on AO3]

[runicmagitek]

Thaw (keinatsubj - 13 Sentinels: Aegis Rim)

(( day 2 of @polyshipweek - featuring some post-canon feels involving BJ bc reasons. art by @garmmy and fic by me. enjoy! ))

A blanket of snow enveloped the world outside. The snow crunched under BJ’s boots as he followed Keitaro and Natsuno through a meandering path in the woods. His exhales manifested in visible puffs. He burrowed further into his scarf to combat the cold, but hearing Natsuno’s laughter warmed him up plenty.

She darted ahead, swinging from low-hanging branches until snow fell. Her smile grew with each limb she dangled from. Powdery snow turned her orange scarf and mittens white, but never hindered her delight.

“I haven’t seen her this lively in some time,” Keitaro said, matching BJ’s stride while watching Natsuno in the distance.

His brow furrowed. “Has she been unhappy?”

“Oh no. It’s not that. She’s been worried these past few months.”

“About what?”

And his pale eyes flicked to him. “About you.”

[read more on AO3]

[runicmagitek]

Rhythmic (keinatsubj - 13 Sentinels: Aegis Rim)

(( day 5 of @polyshipweek - featuring some wedding anniversary feels along with BJ and Keitaro sharing a single braincell lol. art by @garmmy and fic by me. enjoy! ))

Twilight seeped into the house with its deep blue hues. Songbirds began to sing outside. In another hour or so, a kitchen appliance would automatically brew three cups of hot coffee. Until then, Keitaro padded through the halls of his home and retreated to the living room.

He swiped his comms device and summoned multiple floating screens. Each held information from the archive database, detailing dance steps and best practices. A recent video piqued his interest and he replayed it half a dozen times before attempting to mimic the dancers’ motions. Easier said than done when he didn’t have a partner to practice with, but he wanted to—

“What are you doing?”

Keitaro gasped and stumbled to a halt. Lights flashed on in the living room. As he blinked until his eyes adjusted, Keitaro found a figure lingering by the hallway—one that always made him feel like he was staring at a mirror.

“BJ?” Keitaro coughed up. “I-I thought you were asleep.”

He shrugged. “Natsuno was tossing and turning again, so I figured I’d get up.”

“Ah, right. Must be the warmer weather.”

“Mmm. Maybe.” BJ ambled towards him. “That doesn’t explain why you’re awake.”

“Oh! Well.” Keitaro whirled away and minimized the screens. Or he tried to, considering how many were open. “I-it’s nothing to worry about. I was just—”

“Wait.” BJ peered over Keitaro’s shoulder, warm breath teasing his neck. “Are these... dancing instructions?”

[read more on AO3]

[runicmagitek]

Hush (keinatsubj - 13 Sentinels: Aegis Rim)

(( day 6 of @polyshipweek - bc nothing beats snuggling on a couch! art by @garmmy and fic by me. enjoy! ))

The afternoon sun washed over the living room. Cool air circulated in the house to offset the spike in temperature. Keitaro longed to sit under a tree and read a book, but the humidity and bugs made that idyllic plan far less appealing. But he had no obligations that day and the house was empty, thus he settled into a couch with a content sigh.

I’ve been waiting for this all week, he mused, slipping on his reading glasses.

Smiling to himself, Keitaro flipped through his comms device to unearth the digital library he amassed over the years. It didn’t matter if it was considered classic literature or cheap pulp fiction; if it was a good story, Keitaro wanted to lose himself in it. He recently finished a science fiction trilogy involving necromancy and was eager to dive into something new. Scrolling through the selections, he paused at one title under the algorithm’s suggestions: All the Birds in the Sky.

The premise piqued his interest, as did the striking cover. Upon opening the file, Keitaro smiled, sank further into the couch, and—

A slam sounded in the distance. Keitaro gasped and flinched. Was it the front door? Perhaps BJ or Natsuno-san finished their fieldwork today. He waited and listened, though heard nothing else. Releasing a breath, he relaxed into the couch, looked at the wall of text awaiting his attention, and—

“God, it is miserable outside.”

[read more on AO3]

[runicmagitek]

Nova (keinatsubj - 13 Sentinels: Aegis Rim)

(( massive spoilers for the game ))

He thinks it’s because of the sunlight.

The leaves lost their lush green complexion from summer, but the afternoon warmth is all the same. Such a lazy day warrants a break, but there are tasks needing their attention elsewhere. It can wait, though.

Plus it’s hard to do anything when Natsuno sprawls across his lap amidst the field.

She’s older now. They all are, really. Her brown hair skims her shoulders, barely tamed into low ponytails. Fine wrinkles tease the corners of her eyes when she smiles. Oh, how he wishes he was there to watch her evolve since she broke free. He wishes for many things, but... that one stings the most.

He blinks, more so than usual. Yes, the sunlight. That’s what it is. Nothing more.

And while bathing in those rays, Natsuno is still the brightest thing in the entire world.

[read more on AO3]

[runicmagitek]

Many thanks to @moogleterra for tagging me in this year in review thing! Time to go over my favorite fics I shared in 2023! (not tagging anyone, but if you read this and want to play along, consider yourself tagged!)

Like a Broken Record

I wrote this at the beginning of 2022 and was super nervous about sharing it, mostly RE: shipping Takatoshi with someone who wasn't Okino, but I was both really proud of how the fic turned out and the lovely support from everyone who read it!

To Cultivate Anew

I just had a lot of thoughts about the physical marks Throné and Castti acquired that link to their trauma and how utterly beautiful it would be if they got tattoos together to cover up those marks.

High Score

I loved all the keinatsubj fics I wrote for polyship week, but this one was my favorite!! Not only was it fun to envision the summer festival they attend, but all the delicious pre-poly feelings with Natsuno being engaged to Keitaro while also seeing BJ in his human form for the first time were a BLAST to unpack. Plus garmmy's art for it is SO CUTE.

In Good Company

I wrote this for a server exchange and loved exploring the complicated sentiments around working for a shitty corporation, but you've got bills to pay. And nudging Reeves and his personal assistant closer and closer was utterly delicious too!

What Leads You Here

I'll never shut up about this fic. I'm really proud of this one 😭 it's the super angsty post-canon story I wanted, but couldn't find anywhere after I beat the game. But now it exists and it warms my heart to know others enjoyed it too.

On Your Honor

Star's medieval AU gave me severe brainrot and I couldn't help but write a follow-up where these two take their noble/knight secret relationship to the next level.

Anchor Point

Again, I loved all the Ignatz week fics I wrote, but this one is my favorite. Just exploring his relationship with his family and what home means to him, all while he learns archery.

Light the Way Home

Some missing scene feels from Terence's POV when all the Twinside bullshit goes down 😭 really happy with how it turned out!

Your North Star

I wrote this for the Tifa Zine! Just some bittersweet feels with the group as they set up their camp, share stories about the stars, and support one another.

Coming Out of My Cage (And I've Been Doing Just Fine)

Another server exchange fic! This could've easily been a 50k novel and I did my best to shove it into a 3k ish oneshot. I love a good AU and reimagining Legend of Zelda in a cyberpunk vs solarpunk setting was so much fun.

Random Access Memories

And another server exchange fic, but I've had this idea in my head since 2021. So glad I could finally bring it to life, bc there's literally nothing out there exploring Natsuno's grief mid-canon over losing someone very special to her.

[runicmagitek]

WIP game!

Rules: in a new post, post the names of all the files in your wip folder regardless of how nondescriptive or ridiculous. let people send you an ask with the title that most intrigues them and then post a little snippet* and tell us about it!

* addendum to this - some of these I haven't looked at since… pfff 2017? 2018?? Or they comprise of extensive notes with no prose. So I may not share a snippet, but I will most definitely talk about it!

tagged by @iffylogic thank you thank you!! 😍

Pick Me Up (Put Me Down)

1la feels into meeting current!Ei again

(mostly) pre-canon 5+1 things

post-canon romp

Rewind

Recover

Refresh

Kintsugi Kids

keinatsubj wedding

As the Wind Blows

boorai 5+1 things

ryza 2 missing scene rainy day

Kabuki/Olivia meet-cute

Aqua/Myrtle

garden

Celes/Terra post-canon angst

Ellone

teredio modern day AU

mid-canon becoming Corrin's retainer

LET HIM FUCKIN SLEEP

Oh No It Turned Into A Thing

In This Corner of the World post-canon fix-it of sorts

reinako cat cafe confessions

post-canon Gloucester

sharon/ochlys late-night h/c

chloe/primm food (unrequited???)

jolenia feels

I'm not tagging anyone bc it's late and I'm sleepy but if you want to do this and gush about your WIPs?? Consider yourself tagged!!

[runicmagitek]

Baked to Perfection (keinatsubj - 13 Sentinels: Aegis Rim)

(( a belated White Day fic for this OT3! I can't say no to baking shenanigans and thought it would be fun to have Keitaro and BJ brave French baking for their beloved Natsuno. enjoy this silly fic!! also note this is massive spoilers for the game ))

“Um, Keitaro?”

“Yes?”

“I don’t... think we’re doing this correctly.”

Keitaro placed a baking tray—fresh out of the oven—onto potholders. He raised an eyebrow at the lemon tart. Was it supposed to look that dark? Sighing, he removed his oven mitts and turned to his baking partner-in-crime.

“What makes you say—”

He froze mid-sentence. At the other end of the kitchen was BJ, a perfect reflection of himself... except plastered in puff pastry.

“This isn’t working,” BJ grumbled in his struggle against the now gooey dough.

Keitaro slumped where he stood. He didn’t wish to admit defeat. Not now. Barely halfway through the morning and all they had to show for their efforts were broken macaron shells, a heap of sticky puff pastry, and a lemon tart that simultaneously appeared burnt and undercooked.

Okay, maybe BJ had a point. Even so, he still wanted to try—for Natsuno.

It began with her raving about the French pastries she ate while visiting Iori months ago. Since then, Natsuno binged baking shows no different from her sci-fi movie nights. Keitaro caught snippets, entranced with how seamless the process was, almost meditative with each fold and knead. So when BJ suggested doing something for White Day—and also explaining the more modern tradition to Keitaro—they agreed to express their love with French pastries Natsuno drooled over.

Well, now they both understood how deceptively easy those damn video clips were.

[read more on AO3]