A/N: Finally getting back into writing some more Honkai: Star Rail. Wasn't able to for some time due to focusing on the remaining requests I had to do, but now that I am I'm eager to scribble plenty more lewds~

Do enjoy~

Library Duty

Even after Caelus had departed Jarilo-VI with the rest of the Astral Express crew, he made an effort to return when he could through the various warp points left from their time there.

Sometimes it was just to see the sights again, other times it was to visit Bronya and Seele, and more often than not it seemed to be to help random people with their personal troubles, be it a lonely ghost in the Fragmentum to a singer who wanted to know about her idol's personal habits. Which had struck him as a bit odd and perhaps creepy, but they fulfilled his daily mission requirement so he undertook them regardless.

Today was shaping up to be no different. He'd come to visit and had run into Pela, who had become a close friend both during his stay at Jarilo-VI and in his follow-up visits as well. Thus it hadn't been a surprise that, upon mentioning that he didn't have anything to do today and he was just hanging around, Pela requested that he aide her with her duties – namely gathering some books from the Silvermane Library in Qlipoth Fort and going over them for details pertinent to Pela's duties, that being something related to the machines the guards worked with.

And as reluctant as he was to help another person with their problems on what was his self-assigned day-off, he couldn't resist Pela. Whether she knew of her own charms or not he didn't know, but he fell for them all the same.

That was how he found himself following after the short woman as she led him down the pristine halls of Qlipoth Fort. They'd passed a couple Silvermane Guards but aside from a few ceremonial ones the place was quite barren, apparently due to the Fragmentum and all that. He didn't mind though; less eyes was always better and the peace and quiet was a welcome reprieve from the usual chaos the Astral Express endured.

''We're here.'' Pela's sharp and to-the-point voice stirred Caelus from his musings, glancing ahead at the tall door. ''Please be careful to not rustle too many books; some of them are very old and, thusly, prone to damage.''

''Got it.'' Caelus complied, watching as Pela pushed open the door... with some effort. ''Need a hand?''

''That would be appreciated...'' Pela murmured, sounding almost bashful.

Caelus's lips quirked up at the corners at that and he leaned past her, giving a firm push and sending the door inwards, though thankfully not hard enough to bang against the wall. Sighing her thanks Pela marched inside with her usual swift gait and he followed, politely shutting the door behind himself – wondering privately why they even needed a door so tall. Then again he wasn't an interior designer, maybe it was just for show? Or did Jarilo-VI used to house giants?

After a second of deep introspection Caelus shrugged the thought off. Around him the Silvermane Library stood tall and proud, the wallpaper slightly dusty and faded from its prime but even someone as uncouth as he could appreciated the aged beauty of it. A beauty shared by the rows and rows of shelves, filled to the brim with books, some larger than others, and all evenly spaced apart. It was easily as big as the central plaza of Belobog and probably four to five stories high which, while extreme, almost seemed rather small when one considered the entire planet's recorded history was within this one room.

A quick sweep of the room located Pela having gone ahead of him, moving between two shelves and prompting Caelus to hastily follow lest he be left behind or worst lost – he didn't think they had a PA system for picking up missing Trailblazers. The aforementioned woman glanced back at him as he approached, peering up at him past her glasses before rolling her eyes and looking ahead.

''Look for shelves 3E and 4E.'' Pela ordered swiftly, pulling out the clipboard from under her arm, flipping through it. ''I'll procure the information about the robot designs. Since you're taller you can carefully grab the books 'Robotics and Acoustics', 'Methodology of Sir Klein', and 'Interfacing Hybridisation'.''

''What are they about?'' Caelus inquired, looking about for the designated sections.

''Do you know anything about programming and maintaining Belobog's robots?''

''I'm half-sure they work on magic.''

''Then you don't need to worry about the contents.'' Pela remarked plainly, looking left and right – before beckoning him over. ''This section, here. They should be on the second or third shelves; fourth at most. That's where some of the older books are kept.''

Nodding Caelus peered about for the aforementioned books, finger grazing over the spine of beach book. Most of the titles were lost on him, both in context and even language, obviously written by older groups of natives if not by now-extinct groups on the planet. Some books too were as thin as a notebook whilst others were as bulky as an oversized dictionary. He hope for more of the latter, if only because that meant less books per shelf.

Mercifully he found the books quickly – carefully pulling them out and laying them on the floor by his feet. The first two were found quickly and the third came not long after. Bending down Caelus collected them and looked around for Pela, only to find that the short woman had already left, much to his worry.

Two minutes of wandering around the giant library later and he spotted a head of dark hair over in the open section of the library – a wide, square desk tucked into the corner with an old-fashioned computer upon it, alongside other gadgets he couldn't begin to decipher the names of. Pela stood near the computer with a book open before her, finger on the page as she traced the words thoughtfully, presumably reading.

Making his way around the desk he came up next to her. ''Pela, I found the books.''

''Hm? Oh, good. Just put them right here please.'' Pela tapped an empty spot on the desk next to her, and she smiled when he obeyed immediately. ''Thank you. Please stay here for a little longer, I might still need your help.''

''Does this place not have a librarian?'' The grey-haired youth inquired, curious.

''It does, but she's out sick for the day.'' Pela admitted. ''Hence why I requested your aide. You're dependable. Now please, allow me to focus.''

Caelus just hummed and nodded, leaning up against the wall behind him. Silence fell over the library, the walls so thick and reinforced that the noise of the city was completely absent. With so few guards patrolling the corridors of Qlipoth Fort and Bronya no doubt locked up in her office the entire place felt uncomfortably still, prompting Caelus to quietly pick at a piece of loose wallpaper just to distract himself.

Alas that didn't work for long, and out of fear of being scolded he stopped. Left with nothing to do his eyes wandered, idly curious of the numerous shelves and their contents, the floor and its patterns, the height of the room... until his eyes fell upon Pela. The dark-haired girl still stood perusing the book about something or other, the page occasionally turning before she fell back into silence, the only motion being her eyes reading the letters and her finger tracing them, keeping her place.

His eyes ran down her white dress... until they landed on her ass. He'd not really noticed it until then but Pela had a nice ass; small but quite curvy and fitting well with her short height. Bent over as she was her ass was only emphasised that much more, her sleek pantyhose hugging it and her skirt hiked up just enough that nothing was hidden. The longer he stared, watching her occasionally shift her weight from one leg to the other, the more his budding need grew.

And then on a complete whim, as he was wont to do, Caelus pushed off the wall and got behind Pela.

''Hm? What is it- eep!'' Pela squeaked as he pressed his crotch up against her ass, pushing Pela against the desk and practically spooning her. ''C-Caelus?!''

Caelus, however, didn't respond. Grasping the desk he pressed himself into Pela very intentionally, groaning into his ear as his bulge pressed into her butt – which, coupled with her flustered struggles, just made the feeling so much more arousing. So much so in fact that he reached down and unzipped his pants, allowing his dick to spring out and rub along her pantyhose-covered butt, right between her cheeks as he dry-humped her openly.

The sheer audaciousness of his act left Pela speechless; lips moving but not sound escaping beyond a few startled noises, yet her struggles rapidly ceased – simply standing there and letting him grind on her ass, the hotness of his dick unable to be ignored. For a moment it seemed like the intelligence officer would do just that, her eyes turning back to the book and turning a page, but no more than two paragraphs in she stopped herself and looked back at him again, her face growing red.

''C... Calm yourself, Caelus!'' Pela tried to command, but her embarrassment rendered her voice high-pitched and, summarily, cute.

Something that tempted Caelus to lean over her shoulder – an easy feet when he was taller than her – and without warning pulled her into a kiss. Pela froze at the act, stunned into silence, and when he broke off the kiss he gave her a smile that radiated boyish cheek. Something that quickly snapped Pela out of her daze, her face now a luminous shade of red as she spluttered, trying to form a response to his sudden actions.

Caelus didn't. Pushing his face into her hair he inhaled her scent, the slight shampoo smell reminding him of vanilla but more muted, whether by design or time he didn't know. Regardless he relished the scent as he humped her, his cock achingly erect as it pushed and rubbed up against her cheeks, her shorter framed trapped under his own. Not that the officer was in any rush to get away from him, it seemed.

''...goodness, are you this worked up...?'' Pela muttered more to herself than him, but he answered regardless.

''I guess. You're just too cute.'' Caelus responded casually, grunting as he put a bit more effort into his hips. ''Plus your butt is cute.''

''I don't think that's a compliment I've gotten before.'' Pela muttered dryly.

''More people should tell you that.''

''I'd rather they didn't, thank you.''

''So it's fine if only I'm allowed to, then?''

Pela hesitated at that, eliciting a light chuckle from Caelus – his lips grazing her ear. Pela whimpered adorably as he nibbled upon her earlobe, his cock pulsating against her rear as his humps became more assertive, more needy, his tip soon gleaming with pre-cum as he got off just by grinding on her rear. However it wasn't enough, his body craving more, and so with a groan Caelus pulled back – one hand dropping down and guiding him between her thighs, his knees bending to accommodate her shorter height.

Then with a groan he slid himself between her thighs. As if on instinct Pela flinched and pressed her legs together, the sudden pressure on his cock euphoric and coaxing a groan out of the young man – his hips thrusting him forth and between her squishy thighs; thighs made all the softer thanks to her silky pantyhose. The friction, the heat radiating off of her body, all of it just made it so good. Especially since the top of his cock rubbed up against her crotch, the sensation eliciting a quiet gasp from Pela that nonetheless encouraged him to keep it up, loving the little noises he coaxed out of her.

''C-Caelus...'' Pela panted out, groaning past pursed lips. ''S-Stop this, we're in public...''

''Nobody else is around, and we'll hear if someone enters.'' Caelus soothed her nerves, kissing her cheek.

A whimper answered him. Smiling Caelus reached up and groped her breasts through her dress as he fucked her thighs, his breathing hot in her ear as he got off with nothing but her legs. The fact his groin bumped up against her nice ass also helped with that, his body rocking faster in accordance with his instincts, the friction steadily coaxing a fiery need up his shaft, hastened further by Pela's soft whimpers and moans.

Then Pela started to reciprocate. Though she said nothing the short woman started closing her thighs together more intently, pushing them together as best she was able and increasing his pleasure, the tight firmness heavenly. Aiding things further she crossed one foot over the other, pushing her stomach into her desk and enabling him to thrust as hard as he wanted, his groin clapping her ass audibly whilst his tip thrust out just past her groin, his pre-cum gleaming upon the tip.

''Hnf... gonna cum soon...'' Caelus groaned into her ear.

''Y-You can't...'' Pela protested breathlessly. ''Someone will find the mess...''

''Can't stop now.'' He protested in turn, his tongue licking her earlobe and forcing a shudder from her. ''Almost...''

Just then Pela offered resistance in the form of an elbow to his stomach. Grunting Caelus reluctantly stopped and stumbled back a step, half-expecting Pela to put her foot down and stop this – but to his pleasant surprise she didn't. Instead with a burning blush on her cheeks, her eyes hidden behind the white gleam of her glasses, Pela knelt down in front of him and grabbed his hips, pulling him close until his dick was literally up against her face.

Then without warning Pela lifted herself up a little, grazed his tip – and took him into her mouth. The suddenness of it forced a moan from his lips, one that deepened into a strained noise as Pela took him in deep, nearly throating him before she sucked back up to the head and then plunged back down once more. The wet hotness of her mouth felt far more intense than grinding on her ass or fucking her thighs had been, coaxing a rush of heat up his cock, far more needy than before.

As if sensing that Pela held nothing back. She didn't start slow but sucked him off like her life depended on it, hands gripping his hips and refusing to let him go as she throated him over and over again; wet grunts and quick inhales escaping the intelligence officer as she gave him incredible head, pushing him to the brink-!

''Mnph!''

And then he came. Grasping the back of her head he shoved Pela all the way down his dick, barely hearing her startled grunt as his tip shoved itself down her throat – nary a second too late as a torrent of cum gushed down her throat, forcing the intelligence officer to hurriedly swallow the thick load he busted. He held her there, his muscles locked up and his mind fogged over with lust, only aware of the pleasure that washed over him in waves.

Eventually the tightness in his muscles waned and Caelus let go of her head – and not a second later Pela jerked her head back with a gasp. She broke out into spluttering coughs, wiping at her lips as best she could and thumping her chest a couple of times before finally managing to look up at him, breathing hard and her glasses askew, but with no sign of his cum on her tongue. She'd swallowed every last drop.

''H-Haah... there.'' Pela breathed out, stumbling to her feet.

Caelus, however, wasn't yet content. A thought he made acutely apparent as he grasped his sensitive, but still erect dick and stroked himself off to the sight of her flushed visage, a fact that made Pela blush darkly. Yet with little more than a beleaguered sigh the intelligence officer turned around and bent over; hands reaching back and peeling her black pantyhose down to her thighs and no further, laying bare her ass clad in black underwear.

The invitation was one he couldn't resist. With a grin upon his lips Caelus shifted behind Pela and peeled her panties down too, leaving them around he thighs with her pantyhose and revealing her bare slit – his cock-head soon rubbing it. Pela shivered, her elbows coming to rest upon the desk as she kept her ass pushed out towards him, so inviting that he had no chance of resisting; shifting into place and pushing his bulbous, wet tip against her opening.

And with a moan Caelus speared into Pela. The short woman let out a gentle cry as she was penetrated, gripping onto the edge of the desk and tempting Caelus to lay his hands over hers, grunting into her ear as he slowly sunk his dick deeper into her wet pussy. The ease with which he penetrated her only aroused him further, his hips steadily pushing forth and burying himself into her quivering quim until he was as deep as he could go, nearly penetrating her all the way on the first thrust.

''Mn... g-goodness, it feels bigger inside of me than I anticipated...'' Pela breathed out.

''I think that's just because you're short.'' Caelus murmured into her ear.

She stamped on his foot for that observation.

''Ow, point taken.''

''Just... d-do what you need to, you oaf.'' Pela embarrassedly muttered back to him.

To that, Caelus couldn't refuse – groaning as he pulled out to the head and just as swiftly he speared back in, the friction against her slick insides euphoric. He let his husky voice tickle her ear as he pumped into her, getting used to the tightness of Pela's pussy before daring to move a little quicker, each stroke more confident than the last and pushing gasps out of his short partner, her womanhood coiling tightly around him the entire time.

The tightness just made it so much more pleasurable, for both of them. His cock raked her walls as he pumped in-and-out of Pela, her thighs quaking from the sensation and her moans taking on a whinier, shier lilt that just drove him crazy. Without warning he buried his face into her nape and kissed at it, inhaling her sweet scent even as Pela squeaked and tightened up, in turn coaxing a husky groan from Caelus as he put more force into his thrusts, hilting himself in the shortie.

''Mn! M-Mn... Caelus...'' Pela panted out, shifting her legs a little further apart. ''You can move faster, if you want...''

The invitation was one he immediately accepted, unhanding her hands and moving his own to her hips, taking a second to admire their nice feel – before he gripped them and jolted his hips forth. A cry answered him, echoing through the library and prompting Pela to cover her mouth, her glove doing a damn good job of stifling her voice as more cries jolted out of her throat, done to the tune of his groin smacking up against her ass.

Caelus groaned, lolling his head down Pela's back to settle on her nice rear, his hands shifting down just to grab it as he fucked her – his thrusts longer and harder as he slammed into her weeping cunt, her insides moulding themselves to the shape of his shaft with every plundering thrust, some of her nectar scooped out by the motion and clinging to the underside of his shaft. The arousing sensation just made him slam in with that much more passion, her pantyhose not stifling the smack of flesh as he hilted within her once more, enjoying the intelligence officer's snugness.

''Hah! Ah! Y-Yes...!'' Pela gasped out as she bowed her head, feet lifting her up onto her tiptoes just to let him penetrate her than much easier.

''Sounds like you had some stress to work off too.'' Caelus grunted out, hands returning to her hips, keeping her steady.

''M-Maybe I did.'' Came her breathless response, a whimper escaping her suddenly. ''H-Hard... harder, please...!''

Caelus happily complied, a low moan escaping him as her insides tightened just right around him, putting pressure on all the right spots but especially under the head. The moment was brief but it drove him that much closer to orgasm, his thrusts becoming hastier as he pounded Pela's prim and proper pussy raw; the carnal slap of his groin against her ass scandalous yet no less arousing, the noise rising as his speed hastened.

''Yes, y-yes...!'' Pela cried out through trembling breaths.

''Gonna cum.'' Caelus warned, feeling her clench up at his words. ''P-Pela...!''

''Ah, not ins-!''

Too late. With a sharp moan of relief Caelus slammed his cock into Pela's quivering wet hole and hilted himself up against her cervix – and a torrent of hot cum erupted into her womb. The sudden creampie pushed Pela over the edge and she squealed into her palm, head banging against the desk as she bowed her head and endured the utter euphoria that roiled through her whole body, her legs jerking and twitching violently as she orgasmed.

Caelus came down from his high first, a drawn-out hiss escaping the young man as he rocked his hips slowly, thrusting into Pela's pussy gently before finally pulling out – instantly allowing a deluge of cum to overflow from her narrow pussy. The intelligence officer moaned lowly at that, heels coming to touch the thin carpet once more and her short stature wobbling back upright, one hand coming to touch her forehead with a wince. Her glasses were undamaged, thankfully.

''I was going to tell you to not cum inside.'' Pela muttered between breaths.

''Sorry.'' Caelus just shrugged. ''You didn't want a mess earlier, so I thought it'd be alright if I came inside rather than on you.''

''...you have a point, I suppose.'' Pela mumbled. People would ask questions if she left the library without her jacket, assuming that was what he ended up finishing on. If it was her skirt, however... yeah, she had no ways of hiding that without people asking why her usually-immaculate uniform was oddly stained.

Shaking off such thoughts Pela shifted back then, the motion attracting Caelus's eyes. Eyes that soon gleamed with lust as the cute intelligence officer lifted herself up onto the desk, pushing the old books aside in the process and opened her legs to him, her face a deep red but the undisguised want clear as day on her face – not a senseless lust, but a clear, direct want.

''One more time.'' Pela said simply, looking aside. ''And yes, you can finish inside. You already did it once anyway.''

Caelus gladly took her up on her offer, shifting between her legs and rubbing himself along her wet folds – and as one they moaned as he sunk into her. With how wet she was there was little difficulty, his cock sliding into her sticky, slippery pussy up to the hilt, their deep union easily rendering Pela a whimpering mess.

Planting his hands upon the desk Caelus earnestly began to pump into his partner, savouring the look of unconcealed bliss on her face – her teeth sinking into her bottom lip, her eyes screwing shut,m her nose cutely scrunching up – before darting in, kissing her. The surprise kiss made Pela moan and he also took the chance to slip his tongue into her mouth, muffling her weak moan as he found her tongue and dominated it just as quickly, tongue-wrestling the short woman into submission.

The need to breathe though forced them apart, a mutual gasp emphasising it, before with a groan Caelus shifted his hands to her hips, pulling Pela slightly lower and allowing him to hold onto her ass. Nary a second later the young man took to pounding the intelligence officer with renewed vigour, his cock plunging into her narrow pussy and lifting a cry off of Pela's tongue, the sticky sounds of their union filling the library as he did her bareback.

''Right there!'' Pela cried out, throwing her head back. ''Mrnph, yes!''

Just hearing someone as prim and proper as Pela cry out for more turned him on more than he wanted to admit, his lust flaring as he buried himself balls-deep in her tight pussy. Her cries flowed freely through the air even as she slumped more against the desk, elbows on the desk as her weight rested on his hands, enabling him to slam his cock up into the short woman – his lips soon finding hers in a messy, yet no less passionate kiss.

One they broke off with a mutual moan, eyes locked as they panted. Pela closed hers first with a whimper, shaking her head senselessly as he pummelled her pussy, his cock coming out gleaming with their mixed fluids before he swiftly jammed it back into her clenching vice, the tightness that smothered his member so hot and inviting it threatened to make him bust early. With an endurance rivalling that of the Preservation itself he kept pounding Pela, entering her up to the hilt each time and feeling pre-cum ooze from his tip, his balls aching for release.

Rapid, ragged breaths escaped Pela, her arms roping around his nape and holding onto him – prompting him to pick her up. She gasped first then cried out second as he rapidly pounded her without delay, carry-fucking the short woman over to the nearest wall and shoving her up against it, his dick gleaming with her nectar as it thrust up into her sopping nether regions, throbbing and ready to blow.

''Yes, almost, just a little... m-more-!''

Then a mere moment later Pela climaxed. The tight hotness that encircled his shaft was euphoric and Caelus let his orgasm overtake him; mashing his mouth against Pela's in a messy kiss as he unloaded his semen into the short woman. Her vagina strangled his seed out of him, buried up to the hilt as he was and emptying his seed into her, cumming for what felt like a small eternity until the overpowering surge steadily waned.

The need to breathe forced him away from her lips; an explosive gasp shared between them both as they were left panting in the wake of their unified climax. He stared into her blue eyes, admired her rosy cheeks and parted lips, before with a final groan Caelus pulled out of her and let Pela down onto her feet.

She stumbled momentarily, clutching onto him for support, before with a breathless sigh grabbed her pantyhose and panties; pulling them back up. From a distance, she'd look normal... if she wasn't so flushed and her hair a mess.

''Speak of this... to no one.'' Came her breathless command.

Caelus just saluted to that, earning both a roll of the eyes, and a fond smile from his partner.

It would not be the last time they had a tryst in that library, that was for sure.

[END]