My XO and I cheered on the bridge of the command ship as the last humanoid Siren was wiped off the screen. The sensor pods and mobile cameras showed our fleets celebrating as well, the kansen high-fiving and exchanging congratulatory words. I felt my XO's hand wrap grip mine, and I looked over at her.
"That was really tense? Hey… I could really go for some stress relief right now." She bit her lip.
"What kind of stress relief do you want, Lieutenant?" I teased her, knowing full well what she was after.
She braced herself against a console. "We've got fifteen minutes or so before they get back? No need to get me ready. I've been going nuts for the last hour thinking about you…"
"You love me that much? I'm touched~." I unbuttoned her blouse until her cleavage was visible, her modest breasts supported by a cute, lacy pink bra.
"Like you don't feel it too!" She said, and reached down to pull up her skirt, showing me a matching pair of panties, the crotch stained with her juices.
"No one loves you more than I, Sara…" I unbuttoned my trousers, letting them and my underwear fall to my ankles as I moved forward, pressing my manhood against her entrance.
"I love you too. I have the best brother! Now kiss me, please…" She wrapped her arms around my neck and pulled me to her, her wet pussy swallowing my cock as I pushed her panties to the side.
My sister's pussy squeezed me tightly, its familiarity making our lovemaking no less intense. She was already so wet that I wasted no time, pumping into her rhythmically as our tongues met and swirled, my hand cupping her supple breast, pulling her bra down slightly so that I could tease her nipple.
I could smell her ardor, her scent surrounding me as she moaned softly into my mouth. I focused on getting her there… I would never let my little sister down by cumming first! We broke our kiss a few minutes later, pressing our foreheads together as her bright blue eyes looked into mine.
"I love you, Sara… my dear little sister! I'll let no one touch you…"
"Mmm~. I'm glad… you're the only one for me too! Do you want your favorite?" She began shrugging out of her blouse as best she could while being pounded. I stopped for a moment to help her, and a moment later her upper body was bare. She was toned, but had a little extra in each curve… just the way I loved it. She lifted one arm over her head, exposing her armpit.
I resumed thrusting. "Did you wear deodorant this morning?"
She shook her head. "Of course not… my Commander ordered me not to. I make sure not to wash them when I'm in the shower too, just like you said. If my perverted brother likes his sister's stinky armpits…"
"They don't stink."
"Hehe, I know~. Go ahead and sniff. I love that you love my scent. Sorry I haven't been able to shave in a while."
"It's ok, I like it." I reassured her before pressing my face into her pit, inhaling the scent of her condensed body odor. Slightly sour, but a little sweet. Very feminine, gently floral… the short hairs within tickled my nose as I piston'd harder, her moans of pleasure filling the bridge as I felt her insides begin to squeeze against me as they always did just before she was about to cum.
No wonder she gave me this gift! She knew I could cum quickly as well if I could smell her like this.
"I'm gonna cum… let's do it together! Come on… do it inside me!" My sister urged. I felt a heat explode in my loins, and a moment later she was crying out as thick, hot ropes of my cum filled her womb, her pussy squeezing me tightly as she came as well, her nails digging into my shoulder as she shuddered in orgasmic bliss.
I finally pulled my face out of her armpit as we finished, pulling out of her as she pushed some tissues between her slit and her panties to keep my cum from leaking out of her. She got down on her knees and cleaned my cock with her mouth, sucking it as it softened before tucking it back inside my pants.
"Haa… I haven't given you proper head in a while. Think you can shoot a nice load into my mouth later?" She giggled.
"My sister is just as perverted as me," I said, giving her breast a gentle squeeze before she fixed her bra. I helped her back into her blouse, and we made sure we looked presentable before spending our remaining few minutes engaged in a tender make-out session, coming down from the high of our lovemaking.
Sara was beautiful, and would be even without the soft, lustrous blonde hair that framed her face. Beautiful shipgirls surrounded me, but the only girl who caught my eye was my dear sister.
By the time the kansen returned for a debriefing before we would head back to port, we were waiting for them as though nothing at all had happened. The love we felt for each other was intense, genuine, and most of all… taboo. Yet, we long ago resigned ourselves to the fact that our happiness was more important than any kind of social norm!
Sara and I are biological siblings, to be perfectly clear. This isn't one of those loopholes where the siblings aren't related by blood. I always loved my sister, and even as kids we got along unusually well despite only being a year apart.
Still, I would do just about anything for her, and as we grew older we only grew closer together. Our parents seemed grateful for this development as they both worked insanely long hours and relief on the two of us to take care of each other. Sara was an incredible cook, and I basically took care of everything else.
Well, something changed when we hit puberty. I found myself looking at her in a new light, new sensations filling my loins whenever I saw her. We were never overly modest around one another, and when I saw her budding breasts as she came out of the shower one day.
I excused myself and quickly went to our room, thinking she would be taking the time to dry her hair. I was on the top bunk when I heard the door open, and Sara looked right at me as I held my dick in my hand.
"What are you doing?" She asked, blushing.
"I'm… it's… it's nothing!" I insisted, shoving it back in my gym shorts and hopping off the bunk. "Here, I'll go make us dessert…"
She stopped me and then let go of her towel. My eyes grew wide as I creamed my shorts ever so slightly at the sight of my naked sister in my state of arousal. She stood there, looking up at me.
"I love you…" she bit her lip, then reached down to touch her crotch, her pubic hair soft and newly growing. Her fingers came back glistening, her juices coating them.
"Sara…" I breathed, my dick tenting my gym shorts.
"I want to see it… please?" Sara asked, and I immediately took them off. She tugged at my shirt as well, and I took that off too. We both stood there, naked, unsure of what to do. I mean, I had watched porn and stuff like everyone else, but… this was my little sister!
She had a scent unlike any other, and sometimes I would stick my head into her laundry hamper to inhale it. I suppose I must have known long ago that whatever love I had for her surpassed that of normal siblings, but…
"You're so beautiful," I said, imitating the movies I watched.
She blushed. "Thank you… I'm happy, and… I watched one of those videos and… all I could think of was doing that with you. Please… I want to!" Sara insisted.
I nodded, feeling my cock twitch at the thought of making love to my little sister. I pulled her against me, feeling her small boobs press to my chest as out lips met, our first kiss as natural as anything to the two of us. In fact, it was more than that… it was perfect!
I reached down to squeeze her butt, amazed by the softness of her posterior. I had been tempted before to try to cop a feel when she wore her bikini, but had always been to do something so brazen at the public pool.
Our lips pressed together again and again before we found out that it felt even better to use our tongues, but then she broke off the kiss.
"Do I smell stinky to you?" She asked.
"You just showered."
"I mean, I saw you smelling the laundry hamper a little while ago, and you seemed…"
I felt my face burn. "I um… I like the way you smell… it's really hot."
She giggled. "I guess my big brother really loves me. Do you want me to use my mouth? It's supposed to make boys feel great!" She got down on her knees, her eyes wide as she came face to face with my dick. "It's pretty big… and it smells good! I think I see what you mean." She touched my tip, a little pre sticking to her finger.
"I won't move or force you, so you just do what you think is right," I said, sensing her trepidation.
She nodded, then opened her mouth, letting her lips wrap around my tip. Her technique was terrible, looking back on it, but that didn't matter to someone experiencing their first time. Moans escaped me as her tongue slid experimentally along my member, her teeth only occasionally grazing me.
I was young and already pretty close, so it only took a couple minutes for her first blowjob to make me blow a wad. All I could do was gasp as I came, the sensation better than ever before!
"Mmph!" She made a noise as my cum shot into her mouth. She swallowed without thinking, and was surprised to find me still erect after she took her mouth off me.
"It tastes… it tastes funny… but really good, too. Did you enjoy it?" She asked me. My little sister just asked me if I enjoyed her blowjob!
"It was amazing," I told her, and she smiled, hugging me again before laying down on the bottom bunk, spreading her legs and showing me her virgin pussy, her labia glistening with her juices.
"I want to give it to you… there's no one I love more than my big brother, and I want you to have it…" She smiled, blushing. I climbed onto the bed in front of her, my body shaking a little at the thought of what we were about to do. We both knew it wasn't right, and that we could never tell anyone… yet neither of us seemed to care.
"I want you to have mine too, Sara… I love you too, more than anything!" I smiled at her, my dick kissing her entrance.
I leaned down to kiss her, excited for my first time… but more excited to be doing it with her!
"Commander, don't you think Azuma would make a better vanguard tank than Ibuki?" Sara frowned as she pressed up to me in bed, tapping her tablet as she went over fleet formations.
"Absolutely. You just need to make sure she has the upgraded armor plating, and the improved steering gear. Why?"
My sister shook her head, sighing, "Therein lies the issue, We only have two sets of the stuff and the damn carriers are fighting over it again, saying they won't sortie without the extra protection."
"What? They're normally well out of the line of fire. Is it Akagi? We'll need to sort her out."
"It's yours, actually. Enterprise and Bunker Hill."
"Shit, I'm sorry. I'll sort them out, ok?"
"You're the best~." Sara smiled and set her tablet on the nightstand, turning to me and straddling me beneath the covers. We slept nude, and I felt her hot box press to my member as she lay against me, kissing me deeply.
I wrapped my arms around her, reaching down to feel my most favorite butt, pressing a finger against her anus playfully. She bit my lip.
"Anal again? It felt pretty good last time. My brother's dick is the best though!" She laughed, nuzzling me before we resumed our kiss. I reached into my nightstand and pulled out a bottle of lube, getting some on my fingers and stroking her anus with it, pressing some inside of her. I used one finger to thrust it into her, to loosen her up.
"Slowly, Commander~." She said, breaking our kiss as she locked her eyes on mine. I could feel her juices leak onto my cock, her pubes tickling me as she rubbed her slit along it.
"We've got all night, my love!"
"My love… I like that." She smiled, biting my nose gently.
"You smell exceptionally good tonight, Sara," I said, distracting her as I inserted a second finger.
"Haah! C-careful… it feels good though!" She blushed. "You didn't let me shower today…"
"Nope. I want to smell my little sister's real scent." I grinned, holding her to me with my other hand. Her body odor tended towards the strong side, but some nights I would fall asleep with my face in her armpit.
She worked her hips a little quicker as I thrust deeper with my fingers.
"You smell pretty good too… I'm glad no one else is allowed in our room though!"
She had a point. We shared quarters, though technically there were two rooms. We never slept apart, however, so the second connecting room remained unused. No kansen was permitted inside, either. It was the one place where we could truly be together, and we were fiercely protective of it.
I continued to work my fingers, throwing the covers off us as she sat up. "You want to be on top again for it?" I asked her.
"Mhmm… maybe next time you can have your favorite position but I'm still not really used to it."
"We don't have to if it hurts," I told her.
"Hey, my big brother gets to have my ass if he wants. It feels good, I just… need to go at my own pace. Can you play with my boobs? It helps distract me hehe." She blushed, moaning softly as I extracted my fingers from her rectum. She took my cock, click with her juices, into my hand and guided it to where it was kissing her loosened anus.
I reached up and fondled her breasts, teasing her petite rosebud nipples, her silky alabaster skin glowing as I felt her anus stretch to accept my dick.
"It's… so big… haah… spreading me like this… mmm… my brother's dick in my ass…" she panted, sweating as the tip disappeared into her as I watched, her pussy quivering and leaking as well.
I reached down to rub it, her surprised moan a treat to hear. Then, I licked my fingers clean before squeezing her breast again. "After this I'd like to eat you out. I miss your taste~."
"Deal! I remember you saying you wanted to try something new as well…"
"Ahh, that thing?"
"Mhmm. I'm ready if you are." She blushed.
"If you don't like it…"
"Come on! You think your little sister is any less into it than you are?" She laughed, then moaned as she took a few more inches of cock into her rectum. It was squeezing me tightly, wonderfully… I loved my little sister's butt!
With one more concerted effort, she sat all the way down, hilting me inside her as she slowly gyrated her hips. Sara leaned forward, resting her hands on my chest as her soft moans came unabated, her eyes locked to mine.
"How does it feel, Lieutenant?" I asked her.
"Like I have my big brother's big dick in my ass, Commander."
I propped myself up on my elbows and kissed her, our tongues pressing against one another as she started riding me, moving her hips rhythmically, the wet slap of her skin against mine mingling with our moans.
I wrapped my arms around her neck, pulling us closer together and into a deeper kiss, the sweat of our bodies mingling as she lay nearly flat against me, her hips bouncing as she fully relaxed and leaned into the pleasures of anal sex.
Kiss, kiss, kiss…
We loved to kiss. I adored how affectionate we were, though we were always surrounded by shipgirls, so it was difficult to really express it beyond slight gestures. Things like squeezing her hand or other brief moments of physical contact.
"Hey… what are you thinking about?" Sara asked, smiling gently as she lowered herself completely again, grinding on me to take a break. Her body was heaving with her exertions, and I realized we had been going at it for some time.
I was surprised I was able to last this long with her rectum clenching me so tight!
"Just wishing I could kiss you whenever I wanted~."
She nuzzled me before kissing me again. "I'd like that too."
We both knew we had to be careful…
"You're swelling up inside me! Haah… this is… the best part. Do you want to cum in my ass?" She panted, her hands gripping mine as she ushered me towards my climax.
Having my little sister ask me if I wanted to cum in her ass only heightened my excitement! "God yes! I'm gonna fill your bowels with my seed!"
"Lewd brother… go ahead!" Sara giggle-moaned and slammed her hips against me, driving me as deep as I could go inside her.
She pressed her lips to mine as soon as I opened my mouth to say I was going to cum, her tongue diving into my mouth in an instant as I poured hot cum deep into her rectum. She moaned in pleasure, her body shuddering as she came a little.
"Sara, you came a little this time," I said, stroking her back as she lay against me in the afterglow of our mutual climax.
She blushed, "I guess I'm starting to really like this anal stuff… hehe, too bad I'm not a shipgirl, I've heard stories…"
"Regardless, you still need to feel as good as I did, so let's change positions, ok?"
"Yeah, alright."
She got up off me, turning around and showing me her gaping anus. It was so sexy! I gave her soft ass a light smack, and she lay on her back, spreading her legs.
I got up, positioning myself in front of her, admiring her pussy, her juices still leaking from her and making it glisten. Cum leaked from her anus, but right now I needed, more than anything, to eat out my sister.
She moaned softly as I ran my tongue along her soft labia, teasing her swollen clit. Her juices always tasted amazing, but what really drove my desire here was the scent of her musk rising from her crotch. I nuzzled her lightly trimmed pubic hair, inhaling her scent, which was made even more potent as each breath I took was filtered through her soft bush.
Her hands pushed my head into her pussy as I teased her insides, desperate to achieve the climax she so desired. Her insides pulsed as I ran my tongue along her walls, her juices flowing freely into my mouth.
"Right there…" she moaned as I reached up to tease her nipples, pinching them gently as she squirmed, shifting her hips to let me get a little deeper. "Oh fuck… oh fuck!" She cried out in pleasure as her back arched, her climax building inside her.
I drew it out as long as I could, taking my time and enjoying the taste and feel of my sister's pussy against my tongue, her scent the only thing I could experience. Ten minutes, fifteen… I knew she had one hell of an orgasm coming when she could barely speak as her back arched and twisted, her hands digging into the sheets as her insides squeezed my tongue.
The best thing about my little sister when she came? Well, that would have to be that she was a squirter. Her juices poured into my mouth, and I gulped them, her cries of ecstasy making me glad that we were the only ones allowed in the command building after hours.
Even her thighs squeezed me tightly as I luxuriated in the moment, happy that I could bring her as much pleasure as she brought me.
When she calmed down and released me, I moved next to her, bringing her into my arms and holding her as she nuzzled my chest.
"Haah… haah… you're so amazing~."
I chuckled. "You're too sweet."
"Mmm… maybe, but for you… I love you."
"I love you too."
We knew we had to clean up, but for now we just needed each other as we were in the moment.
Enterprise came into the office, a look of annoyance on her face. "Commander, where did my upgraded armor go?"
"Oh, I reassigned it to the Lieutenant for Azuma to use. You hardly take any damage and Azuma is on the front lines."
"Hmph. At least let me know next time."
"Well, I gave you an extra catapult."
"Yeah… anyway, are you gonna accept my offer or what? I look stupid."
"What offer?" Sara chimed in, looking from me to Enterprise.
"Since he wouldn't ask, I asked him to dinner. Yet he just brushes me off."
"Oh, is that so?" Sara moved closer to me, looking conflicted.
Enterprise noticed this, "Lieutenant, you're his sister, please tell him there's nothing wrong with going on a date with a shipgirl. I thought he'd be happy."
Sara and I looked at one another for a moment too long, as when we looked back to Enterprise, the perceptive shipgirl picked up on what we had tried to keep secret for so long. She didn't need to know the full details or backstory to see how we were around each other.
"Oh, oh my god, you two…" Enterprise began.
"I guess… we can't really hide it anymore." Sara sighed.
"Enterprise, Sara and I…"
"Don't humans frown on that sort of thing?"
"I don't… we don't care, Enty. I love her more than anything, and I'd do anything for her. She is my beloved sister, and…"
"I'm not gonna judge you two. I'm not human, I'm a kansen. We don't have the same reservations as you do about that sort of thing. Look… I'm just gonna say this, and I know humans tend to look for monogamy but shipgirls are different and… well, sometimes we fall in love with a human and…"
"What did you do to poor Enterprise?" Sara's accusatory glare left me on the defensive.
"Nothing!"
"It's true. He didn't do anything. I'm… sorry for bringing it up. Don't worry, I won't tell anyone."
Sara sighed. "It's… this part of the job, isn't it. I… don't want to share you, but we need to take care of our shipgirls as well. I don't know, Commander…"
"Sara, this is up to you."
"Can we at least do it together?"
Enterprise looked up, "R-really? You'd be ok with that?"
Neither of us could miss the obvious hope on her face.
Sara nodded, and I held her hand in mine.
"Why don't we make it official?" I asked my little sister.
"What do you mean?"
"Well… I don't care what anyone thinks anymore. I… I hope you feel the same," I kissed her and put a small, velvet box into her hand.
"W-wait, is this?" Tears sprang to her eyes.
"This way, we both know we'll spend our lives together, as we promised. For now, though… we'll just include our shipgirls in them."
Sara nodded, and I opened the box, showing her the ring inside.
"It's beautiful!" She exclaimed.
I smiled and slid it onto her finger, pulling her into a tight hug and kissing her.
"It's so sweet…" Enterprise said, smiling as we finally were able to freely express ourselves in front of one of the kansen.
"I love you so much!" Sara said, nuzzling me affectionately.
"I love you too, now and always~."
I felt a new level of security as we held one another, though in my mind I felt a little trepidation at the thought of including the kansen in our relationship… I quickly pushed the thoughts from my mind. Nothing could bring what we had down, no matter what!