Chapter 10: Crossing the Line

Quick to duck out, Lisa went to her laboratory.
The official line I was to give is “Lisa’s currently doing private research”, in actuality she was cleaning up and hiding the noticeable bulge in her stomach caused from the abnormal amount of cum she’d managed to make my ‘Seed’ generate.
She had mentioned something about ‘having techniques to work it off’, but it’d take her a few hours, so Lisa decided to incinerate as much of the mess as she could with her electro-magery, and we’d both opened windows to help air out what was by now a possibly noxious scent permeating the Library.
It wasn’t a perfect solution, but given how Mondstadt was designed, wind was definitely flowing in and clearing the air; the perks of living in a city known for its wind.

Thankfully, it was also late afternoon by the time I opened, so the Library wouldn’t be open to the public for more than a handful of hours, and the few likely to turn up weren’t likely to need my help.

I spent my time reading Amy’s letter, and formulating a reply.
According to her letter, she wasn’t really sure how to make friends, so she’d like it if we could atleast keep in touch like this.
She also said that, if I wasn’t comfortable leaving letters in Lisa’s care, I should find her sister, one of the few Investigators for Mondstadt’s Adventurer’s Guild. I wasn’t familiar with the Investigators, since they’re job was more specialised than the Surveyors’, so I was a tad concerned about figuring out which one was her sister.
The only clue I had, was “Look for a girl clad in the binding armor of darkness, guided by a midnight raven”.
That seemed like it should make it easier, since I was fairly certain I already knew this midnight raven.

Of which, said midnight raven was trying to sit outside the window like a normal bird, both his stiff posture and exotic plumage ensuring it was quite obvious he was waiting for something.
I quickly penned a reply, and brought a stool over to the window, allowing me to hold my reply to Amy out within reach of the fearsome fowl.
I tried to remember the phrase Lisa had used to get the strange Raven to act, “Please take this to your Master’s si-“

“Fischl.” Came a curt response from the raven, whose back was to me.

“Excuse me?”

“Her name. Mein Fräulein’sname is Fischl.” He angled his head ever so slightly, so that while he wasn’t facing me, he could still see me partially.
“You’ll have time to learn her full name and title, but Fischl will suffice until she can properly introduce herself.”

The way the Raven referred to Amy’s sister, reminded me of two things: a more archaic way of how the Nobles of Mondstadt spoke, based on what Eula had taught me; and of the way the character Ozvarldo spoke of the character Fischl in the series Amy and I had talked about.
It seemed Amy’s sister loved the series more than either of us, if she was that committed to ‘being’ the character of Fischl, so it only made sense for me to do what I could to ingratiate myself with her.
“I humbly request that you take this missive to Our Dark Mistress?” I tried, hoping I got my point across.

An amused huff was my only clue into the inscrutable machinations that lay behind the mind of the midnight raven, as it tentatively reached forward for my letter to Fischl, taking it in beak before flying away.

“Thank you!” I cried to death ears, before turning back to finish my shift.
Time passed very quickly, as my mind drifted to thoughts of emerald eyes and goldspun hair.

========

“How did it feel,” Lisa asked as she began to undress, “to be in charge of my Library, cutie~?” Given what we had been doing for the last week, she had forgone the prominent privacy screen and was just openly stripping.
I still wasn’t sure if it was because she trusted me, or because she wanted to incite my lust. Knowing her, it was probably a bit of both.

…no, it was definitely to incite my lust, given how she had sat me down on the edge of the bed I was sharing with her, and ensured I had a good view of her. It was very hard not to notice her pussy glistening as she removed her underwear and bent over to put the slightly damp garments into a laundry basket.

“It wasn’t has hard as I’d imagined.” I tried to avoid looking at her, more for my own sanity than any fake notion of chivalry, but her body kept drawing my eyes.
It was so hard not to admire her curves. Amber was lean and petite, and Eula was curvier but more muscled, both of which were a delight to experience firsthand.
But due to the safer nature of Lisa’s daily job, she had more meat on her bones, which added a delightful softness to feeling her curves.
Amber and Eula were a rigorous workout who held you up to their standards, whereas Lisa was someone who you drowned yourself in willingly.

Lisa giggled, before turning around and displaying the plentiful bounty that was her chest, leaning forward carefully and letting her bounty hang, the slight sway from gravity almost hypnotic.
“Just be glad we didn’t have to go hunting for returns. Then you’d see just how much work is actually expected of me.”

“I have no doubt. You might not have the same definition as Amber or Eula, but I can tell you still do a lot of physical labor.”
I wasn’t lying either. Underneath the pleasing layer of softness, there was hardness to her muscles that only came from those who routinely put in physical labor.

She gave me an odd look. It felt like a scheming look, but I still wasn’t sure how to read Lisa’s expressions yet.

“Hmmmm, I’m not doing a good enough job of seducing you if you’re still bringing those two up.” She stated bluntly, before turning and rummaging around in her drawers for something.

I blanched. Seduce me?

“Excuse me?”

She pulled out some lingerie; purple stockings with rose and thorn patterns, a black-ish purple garterbelt with matching patterns to the stockings, and a lacy light purple bra that seemed to be missing a lot of fabric in the cups.
The bra would theoretically still hold her excessive chest, but the pattern allowed for her nipples to flow and stand out, the overall shape of her breasts within this bra would make them very erotic, my mouth almost watering at the idea of groping her in said bra.

“I was hoping to have seduced you away from thinking about the other girls by the end of this, but alas~.”

My rational brain and the burgeoning lust flowing from ‘The Seed’ were struggling to form coherent thoughts.
“But why?”

Lisa turned her back to me, as she raised a leg to put her stockings on while standing before doing the other, giving me another eyeful of her now obviously aroused pussy.
Rational brain was confused as to why she didn’t sit down to slide her stockings on, whereas ‘The Seed’ pushed me to drink deeply of the honey almost dripping from her pussy.

“Because I don’t like to share.” She stated bluntly, as she pulled her garter belt on, and attached it to her stockings.
“But as I’ve seen, keeping you for me and a certain someone isn’t feasible.”

Rational brain was losing this battle. ‘The Seed’ was overstimulated from this oversexed week, and was not going to let something a silly as ‘willpower’ stop it from fucking this woman, once she activated it.

“Me?” I asked dully, as the sweet fire that had now defined my existence since that damned cave began to creep through my bloodstream.
‘The Seed’ couldn’t flood me properly until Lisa made the first move, but damn was it trying.

Lisa pulled on her bra, adjusting so that her nipples and the titflesh behind bulged out in such an erotic way I almost launched myself off her bed to wrap my hands around them.
I wanted to pin her to her drawers and fill her again and again and again, teasing her nipples every time I filled her.
“My partner and I need someone who has the stamina to match our hunger, and you are the only person who has that, while also knowing how to be discreet.”
She turned to face me, hands on her hips, her lingerie a feast to behold and one I longed to devour.
“But that’ll have to wait. Now, get into bed, it’s time for sleep~!”
She gave me a quick peck on the forehead, before climbing into her side of the bed.

“Huh?” Hadn’t she just done all this teasing, so we’d spend the night fucking?

“Hmm?” she turned over, to look at me from beneath her blankets.
“We’re done for the day, it’s time to sleep~.”

Something about her tone was tugging at something in my head, but it refused to coalesce, so I quickly undressed, and hid beneath my share of the blankets.
Thankfully, the pyro runes weren’t manifesting, which meant I could, hopefully, calm myself down and attempt sleep.
……but damn, was my cock so fucking erect.
“Goodnight.” I grunted, unsure of how I felt at being teased and then left blueballed.

I swore there was a humorous tone to her “Goodnight~.”, but I decided to overlook it. I had a long night ahead of me.

———

It was now 1am the next day, and I was still awake. Painfully so.
‘The Seed’ refused to back down, keeping me so incredibly erect it was almost like torture. The most pleasant torture possible, as the slightest caress from Lisa’s silk sheets caused me to throb.
I’d considered getting myself off, but I’d quickly dismissed the notion.
‘The Seed’ wanted to fuck and fill a woman, and the first release would give it the control it craved. And I couldn’t do that to Lisa.

“As far as I’m concerned, you have free use of my body, especially if we’re alone.”

The thought struck me out of nowhere. I could do that to Lisa, she’d given me permission.
But should I? Even with permission, fucking someone who was asleep was still a dang—

Lisa decided everything for me was how I was justifying it to myself, as she rolled over in her sleep, her arm landing on my chest. Almost instinctively, she pulled herself in close to my side, and wrapped her leg over mine; lightly rubbing her still wet pussy against my thigh.

The slow and rhythmic warmth of her breath against my neck felt genuine, as if she was actually asleep. But you could never tell with this vixen.
If she wanted to play games, I’d play her game. She gave me permission, after all.

I eased one arm under her head, giving myself leverage to carefully hoist her slightly on to me, her weight now partially weighing on me, as the light rubbing of her pussy now became noticeable, quiet moans mixing in with her breathing as her face started to flush with arousal.

I quickly took the opportunity to plunder her luxurious chest, my hands sinking into the generous amount of titflesh, as I began to grope and knead the heavenly treasure pushed against me.
Fucking her full of cum was my goal, but enjoying her other assets was to be expected. With tits as full as her, and an ass to match, it was hard not to enjoy the softness Lisa brought to the bedroom.

Slowly, I eased my thigh up, easing the gorgeous Librarian on top of me, giving her nipple a quick pinch before using my hand to spread her legs so she was straddling me in her sleepy state. Given how I’d just added gravity to the equation, the sleeping Librarian couldn’t grind against the now pyro-infused cock that was now aligned against her pussy, the cock tip delightfully nestled between the lower curves of her gorgeous ass.
If not for the fact that the ‘Seed’ wanted to fuck her full of cum, I might’ve happily settled for this position, kissing along her neck, leaving hickeys as I used one hand to grope her ass and hold her in place, tweaking her nipples with my other one, all while I thrusted my cock against her pussy before finally cumming all over her ass.
But the ‘Seed’ wanted her cunt, and I wasn’t going to deny it this time.

Given I was now fully erect, pyro runes raging along my length, I eased her upwards.
As I aligned my pre-cum leaking cock crown against her wet pussy, Lisa’s head settled atop mine, forehead to forehead.
On instinct, I went to kiss, tongue darting in. And to my surprise, the sleeping Lisa responded, albeit partially. While my tongue and lips were more forceful and needy, she was sucking on my tongue slightly, her tongue lazily rubbing against the tip of mine.
Despite how the ‘Seed’ was now flooding me with hormones, I needed control if I was to fuck her while she slept without waking her.
The ‘Seed’ was great for sexual marathons and for acts that made my partners more vocal, but the way it took control as we fucked and filled the women we met meant I needed to forge my willpower into steel strong enough to enable me to keep control, atleast when I wanted to.

This wasn’t an easy thing to do, as I pressed my pyro-fuelled cock ever so slowly into Lisa’s dripping pussy; her juices gushing a little down on to the base of my cock, as my raging crown opened her labia and pushed through into her needy depths, moans rewarding me for every inch I slowly managed to get in without waking her.
She’d wake eventually, since there was no way she’d be able to sleep through the Electro/Pyro overload that was bound to happen when I finally blew my first of many loads into her tonight.
But until then, I was going to enjoy savouring the lazy vixen’s depths, as I hilted my cock, kissing her neck hard and leaving a mark on her pale skin.

To keep control, I took a deep breath and just enjoyed the sensation of filling my sleeping partner with my cock, her pussy lazily reacting to the intrusion.
I wanted to thrust and hammer away at her depths, to flood her womb with cum and claim her as mine. But that was the ‘Seed’ talking, and it’d wake her. If she were to wake up during this, I wanted it to be from the sudden fiery heat in her belly making her orgasm so hard she couldn’t help but wake.
I slowly eased myself out of the librarian’s snug hole, stopping just short of pulling out by leaving my crown to plug her wet pussy, quiet moans and the way her pussy tightened signs that she was atleast having a pleasant dream from this.
If not for the fact I was willing leaving the crown of my cock within her, the way her pussy was clamping down might’ve made it much harder to properly pull myself out, not that I was inclined to.

“I wish you weren’t so lazy, so you could fuck me like you obviously ant to.” I moaned, slowly thrusting in again, and pulling out, setting up a tempo to help build our orgasms.
Loathe as I was to release her breast, I did, so I could get a better grip on her ass, pushing her down as much as I could when I next hilted myself inside her, her spasming pussy generating a spark of Electro energy running through my cock and a heartier moan my reward for doing an apparently good job.

“….mmmm…..at I wan…..fill…..ith cum….” Lisa dreamed aloud, the static her pussy was generating now pulsing in time with what must be her pending orgasm, the sensation also pushing me to my own despite the slow tempo of thrusting.

“Your wish is mine to grant!” I groaned, as I erupted into her, hilting myself so my crown pressed against her womb, the pyro-electro Overload setting off Lisa’s seemingly violent orgasm as her body enjoyed the release the elemental reactions brought on by my cum induced in her.
The raw guttural moans of pleasure would’ve been indecent were we still in the library, but in the confines of Lisa’s bedroom, they were utterly erotic.
As the wave of electro travelled up the mage’s body, her eyes seemingly opened and glowed green tinged with electro arcs, and focused on mine. In that brief moment, I swore she wore a smug and knowing look, but in the next, the energy ceased and her head landed on the pillow beside my head, before the apparently still asleep mage started to lightly snore.

I left myself hilted inside Lisa, enjoying the sensation of cum going through my cock, pulsing against the pussy eagerly milking it for said precious cargo.
Unfortunately, my balls were will overstimulated, so I’d still be spending the next few minutes filling Lisa’s pussy and womb with the deluge churning away within me, each successive blast of cum causing more to leak out of her thoroughly stuffed pussy.
I’d considered pulling out and just hosing the sleeping woman in cum, ensuring she’d sleep in it and be utterly marked by my scent by the time she woke, but that could come later.
Finally, my cock eased up and the orgasm stopped, and I could pull myself out from her depths, the deluge of cum spilling out on to the offending instrument that filled her, still rock hard and raging with pyro energy.
The night was young, my cock was hard, and thanks to the ‘Seed’ I had almost no refractory period.

Time for round two, as I pressed my cock into her ass, our mixed juices being all the lube we needed.

==========

Four bouts of stuffing the sleeping Lisa full of rather absurd amounts of cum later, I pulled out of Lisa’s ass, the last vestiges of my orgasm painting it a nice pearlescent white.
It must have been due to the reaction between the trace amounts of Electro energy in Lisa’s fluids and the pyro in mine, but Lisa was only lying in a rather small puddle of cum, despite how I had definitely pumped enough cum into her that her belly had swollen due to the sheer amount.
I languidly rubbed my cock between her generous cheeks, keeping myself hard, before rolling her over.

The woman was a heavy sleeper, since the multiple orgasms and elemental reactions didn’t seem to be waking her.
So now, I was determined to try something that would force her to wake up.
…..well, after I fucked her tits, since there was no way I was missing out on covering her face and tits in cum.

Straddling her chest, I put my cock between her luxurious breasts, and planned my next move.
Typically, for a titfuck, your partner need to either be wearing tight clothes that allowed their partner’s cock to be stimulated, or they used their hands to hold their tits together while their partner fucked their beautiful tits.
Neither of which were an option, since Lisa was naked, and she was asleep. I also couldn’t pull myself away from Lisa long enough to find something akin to a belt that’d do the job.

…but when stimulated either orally or via her pussy, her hands did seem to subconsciously grip things.
Lifting one of her arms, I crossed it over her chest so it was holding the breast on the opposite side, before repeating it with her other arm.
Reaching back, I slipped my fingers into her cum-filled pussy, stirring it around, pulling out a glob of Overloaded goo. I leant forward, and pushed my pinkie finger through her lips, being rewarded with a slight suckling, which was a good sign, considering what I was about to do.
Carefully hooking my pinkie downwards, I open her mouth and filled it with the Overloaded cum, the mixture getting a noticeably more intense suckling, before my intended effect kicked in.
Lisa’s eyes began to flutter as the intense energies travelled through her body, a continuous moan being a secondary reward as her limp hands reflexively clamped down on her breasts, small arcs of electro energy emanating from her nipples to her fingers, creating a web-like pattern of alternating arcs between her fingers.

More importantly, Lisa’s hands now held her prestigious chest snugly tight around my pyretic cock, the electro arcs near but not quite close enough to trigger a reaction, as I started to slowly thrust my cock through the heavenly valley it was now buried in.
I grabbed hold of the headboard, needing leverage to help with my thrusting, as my cock eased forward and prodded Lisa’s chin, while still having some length to go.
Seeing how far I could get my cock, I studied Lisa’s face and position, and had another brilliant idea.

Stopping my thrust, I placed a hand on the side of her head, and tilted her forward so that my cock was pressing against her lips.
After a few thrust, I was caught off guard when my cock parted her lips as she took a breath; the sleeping Librarian began to partially suck on the intruding pyretic staff.
I started to thrust faster, and in her unconscious attempts to suck on something reacting faster than she was, her tongue lolled out, giving me a target to aim for in my thrusting.

“Even in your sleep, you’re still a horny mess.” I moaned, one hand still gripping the headboard, the other holding Lisa’s head in place, my thumb massaging the area along her temple.

Between her fingers forcibly groping her chest, the electro energy stimulating any flesh it came into contact with and arcing between her nipples, and the hot cock thrusting between her tits and rubbing against her tongue, the sleeping Lisa’s features were starting to flush, and I could feel her stomach moving beneath me as her lower body was up to something, which was probably her legs rubbing together as I kept stimulating her.

Sparks began to emit from her hands, as the pyro runes on my cock began to channel more energy and threaten an overload.
Quickly thrusting forward, hard enough to free my raging rod from her heavenly valley, and sheathe it deep in her throat, which meant we were safe from an overload that might wake her or hurt us.
Not as safe from the sudden tight wetness of Lisa’s throat pushing me into another hard orgasm.
My cock pulsed and seemingly molten cum erupted down her throat, Lisa automatically swallowing it all in her sleep.

Wave after wave of cum poured down the sleeping Librarian’s throat, to the point I was starting to worry if she could even breathe. Seeing tears forming in her eyes, and cum now sputtering forth from her nose, I finally pulled my cock from the heavenly vice that was her throat, one last wave of pleasure anointing her chest with a pattern akin to a necklace of pearls.
The sleeping Lisa’s breathing was ragged, deep breathes evident the sudden orgasm had deprived her of air, and the way her legs were splayed and her hips were still bucking seemed to indicate she’d apparently gotten an amazing dream out of it.

Looking at the cum-soaked mess and cum-swollen stomach of my sleeping benefactor, reality tried to set in and force a panic, at what I had done to the defenceless woman.

“Mmmmm…..that’s what……wanted badly~.” Lisa sleepily murmured, still somehow oblivious to the intense sex she’d just been a part of.

“As far as I’m concerned, you have free use of my body, especially if we’re alone.”

I calmed myself before true panic could set in, remembering Lisa’s own words and how she’d constantly said it was okay and was exactly what she wanted.

However, it was still pre-dawn, which meant I’d have to climb back into the mess I’d created, and having already done that once, I loathed the idea of doing it again.
Lisa had said to knock rhythmically on her door, and a Maid would be ready to assist, at any hour. I guess now was the time to test it.

I was barely three taps into a rhythm before a voice answered me from the other side of the closed door.
“How may I assist you?”

If not for the fact I was exhausted from everything, I would’ve been jumped from fright.
“Uh, hi. Lisa’s bed is a mess, is there anything we can do about it?”

“That shouldn’t be an issue. Could you open the door so I can see how much work is required?”
I complied, quietly opening the door, as one of the Favonious maids now greeted my sight.
“Now, let’s se—“
The maid stopped in her tracks as her nose gave a single sniff, her exceptional muscle control refusing to betray whatever she was actually thinking.
“Ah, I see. This is why Miss Noelle was given night duty.” The maid took a noticeable step back away from the doorway.
“Please, open the window, and move Mistress Lisa out of the bed, and we’ll have it sorted post haste.”

I nodded in understanding, and turned my back to the maid, who was not as silent as she thought she was as she dashed to where I assumed the ‘Knight Maid’ was currently.
Going back to Lisa, I sighed at the sheer volume she’d managed to milk out of me, before using one of the cleaner blankets to clean up the librarian as much as I could before pulling her out of the sex goop.
Using another blanket, I cleaned us both of as much of the remaining goop as possible, before I set the sleeping Lisa on her chaise lounge.
She began to shiver, obviously cold from having been pulled from the warm cumpuddle and the open window now doing what little it could to help aerate the room.

Grabbing my coat, I snuggled behind the Librarian, and covered us. Hopefully, it wouldn’t be long before the maid came and fixed Lisa’s b—