The Tightness of the Forbidden Passage
"Luni's... butt-pussy...♡ Sister's cock is inside me...♡"
It felt as if something were constantly coiling around my cock.
A sensation that was ticklish, yet stimulating enough to keep me fully erect.
The sensation wasn't foreign; in fact, it was quite familiar.
"Umm..."
I slowly opened my eyes at the persistent stimulation.
What I saw was Luni, licking my cock.
"Slurp...♡ Oh? Sister, you're awake? Sluuuuuurp...♡"
Luni didn't look embarrassed at all as she continued to lick my member.
Was I having an incredibly vivid dream?
Luni licking my cock while I slept, and her reacting without a shred of shame—this was something that simply couldn't happen in reality.
"Luni...?"
"Androph-ssi... slurp...♡ She carried you here on her back. Slurrrrp...♡"
At the mention of Androph's name, last night's events came rushing back to me.
I must have passed out from overusing my magic, and Androph had carried me to the inn.
I wasn't sure if I should be grateful, but I realized this was reality.
Yet, the sight of Luni licking my cock still felt like a dream.
"I don't know what happened with Androph-ssi, but... sluuuuuurp♡ Hya-eup...♡ She said it looked like you used up almost all your magic."
"Is that so?"
"Yeah, so... chubu-up...♡ I thought maybe if I sucked your cock, you'd feel better. Slurrrrp♡"
I had expected that after being drained so thoroughly by Luni, I wouldn't be able to get an erection for a while.
My cock, right before my eyes, completely defied that expectation.
It was twitching so vividly, asserting its presence.
"Luni, are you low on magic?"
"Nooo. Slurp...♡ I have plenty of magic. I was just... slurrrrp♡ ...worried about you, Sister..."
Looking closely at her face, I realized the calm expression I'd seen in my sleep was just a hallucination.
Her face was flushed deep red, and she was darting her tongue while checking my reaction.
"If you want to cum... slurp...♡ You can, Sister."
"I think I'm about to."
"Slurrrrp♡ Hya-eup♡"
"Hut...!"
As she extended her tongue and began to obsessively lick only the glans, a faint moan escaped my lips.
The senses dulled by deep sleep had been awakened by Luni's oral service.
"Are you doing this service because you're worried about me?"
"Slurp...♡ Y-yeah... I... sluuuup...♡ I didn't, um... I didn't just get horny and pounce on my sleeping sister..."
Even while she was desperately making excuses, her tongue didn't stop licking my cock.
"Or... do you want to put it inside and cum...?"
To think the day would come when I'd receive such service from Luni.
All the times I'd worked her over, calling her my personal fuck-toy, hadn't been in vain.
"Yeah, but I don't think putting it in your pussy is a good idea."
If I ejaculated inside her pussy, my magic would be absorbed into her womb.
If I had my magic absorbed in this state, I would surely struggle to even maintain my human form.
"Then... you can just cum anywhere...♡"
"But I want to cum inside you, Luni."
Since I was starting my morning with such a rare sight, I wanted to ejaculate while feeling an even stronger sensation.
"I'm going to fuck your ass."
"Chup...♡ W-what...?!"
The tongue that hadn't stopped moving for a single second came to a dead halt.
In this situation, the choice was mine, and I wanted to ejaculate inside Luni.
But ejaculating in her pussy was impossible.
That left only one place.
"A-ah, if you want to cum inside... then, in my mouth..."
As she stammered her suggestion, I shook my head.
I sat up and grabbed Luni's buttocks firmly.
"Hya-ang...♡"
Having licked and ingested my pre-cum, Luni must have been thoroughly heated up.
I pushed my hands, which were gripping her hips, further inward.
As my fingertips touched her anus, she twitched violently.
"Hiiit...♡"
"If you let me cum in your ass, I think my body will recover right away."
"This is... n-not a place for putting things in."
"Luni, didn't I tell you? If I put my cock in, then that's the place for it."
I kept rubbing her anus while applying pressure with my fingertips.
Since it was a spot that had never been touched, and there was no sticky fluid there yet, even the tip wouldn't go in easily.
"Ueut...♡"
"Luni, you gave me a morning blowjob because you were worried about me, right?"
"Th-that... yeah..."
"Since I'm a demon who governs lust and we're contracted, we can exchange magic through acts like this."
Luni's head, which had been stiff, moved slightly.
"Then wouldn't anal sex be the biggest help in recovering my condition?"
"Ueu..."
"It's sex, but it's not like I'm giving my magic to you."
Luni, who had been listening to my nonsensical logic, pulled away from me.
"Then... um... I'll... do it."
"Do what?"
"No matter how much lube you put on your cock... i-it won't go in right away."
"Yeah, you're right."
"So I'll... with my fingers... yeah..."
Luni approached me again and started pushing my body off the bed.
"Wh-when I'm ready... I'll call you... so just get out for now..."
"I don't want to. I'm going to watch Luni masturbate her ass right here."
"N-no...! How could I show you that!"
It's fascinating how she finds anal masturbation more embarrassing than anal sex.
If we're talking about the degree of shame, surely anal sex would be worse.
"Alright, Luni. I'll step out, so call me when you're ready."
"Y-yeah..."
I obediently followed Luni's request and stepped out of the room.
Soon after, the door slammed shut.
"So you're up."
"Thanks for yesterday."
Androph spoke to me.
Since there was definitely something to be grateful for, I tried to continue the conversation while facing her.
-Click!
As I turned, she grabbed the hilt of her sword, looking ready to draw it at any moment.
"What's wrong?"
"If you turn back, I will slice off that grotesque thing."
"Hey, isn't that a bit much? That's the cock that's about to fuck Luni's ass."
"Sh-shut up...! Don't keep telling me things I don't want to know!"
Androph's face flushed bright red in an instant.
It became remarkably similar to the color of her hair.
"Hya-ang♡ Huhiit...♡ F-feels weird...♡ Hya-ang♥"
Just as Androph was being extremely wary of me, Luni's intense moans leaked through the door.
It seemed she had started widening herself with her fingers.
"Ah, so hot. I want to kick the door open right now and fuck her."
"Ugh... my ears are rotting away again today."
"If you decided to live with us, you have to endure this much."
"Hi-hya-aaaang♥"
I didn't know how she was poking her anus, but her loud moans filled the entire room.
"...It'd be a crime to have a cock and endure this."
Unable to hold back any longer, I threw the door open.
"Luni, are you doing a good job with the anal expansion?"
"S-sister...?!"
Luni was rubbing her clitoris while shoving two fingers into her anus.
To think she was already using two fingers.
The first moan must have been when she inserted one, and the second, incredible moan must have been when she inserted the second.
"Ha...♡ I can't take it anymore."
I approached Luni, who had frozen with her fingers still inside her anus.
I climbed onto the bed, pulled her fingers out, and rubbed my glans in their place.
"So sticky? That's strange. The anus doesn't lubricate itself."
"Th-that's..."
"I get it. You used your pussy juice to wet your fingers, didn't you?"
Her endlessly wet pussy was the evidence.
"Eut...♡ Sister, why already... G-get out quickly...!"
"No. You can't make me this horny and then tell me to leave."
"It's not... big enough for your cock yet..."
"This is enough."
-Push!
I moved forward slowly while holding my cock, and as her anus widened, it swallowed the glans.
"Hiiit♥ It's... t-too... biggg...♡"
She immediately tilted her chin up and started trembling violently.
"I'm going to put it all in at once, Luni."
-Smooch!
After locking lips to lessen the pain even a little.
-Shhhhuuuuuck!
"Hogooooooc♥"
I shoved it all the way to the root into her anus in one go.
"He-hu-geuuuk♥ Hu-gyaaaang♡ He-hi-euuuut♥"
I stayed still with it deep inside to give her time to adjust to my cock.
During this time, Luni just let out moans with her eyes rolled back.
"Luni, are you okay?"
"He-hu-geuut♥ Luni's butt-pussy...♡ Sister's cock is inside me...♡"
How is she so good at saying such lewd things?
Luni, properly in heat, seemed to be showing more lewdness than I was.
"Shall I move?"
"N-no...♡ If you move now..."
-Squelch! Shhhhuuuuck!
"He-geeeek♥"
The walls were gripping my cock so tightly that it felt like it would be pulled off just by pulling back slightly.
The moment I pulled back as hard as I could and shoved it back in to the root.
-Sluuuuuurp!
Luni pissed all over the white sheets.
"Luni, you're an adult, what are you doing wetting yourself?"
"Hya-haaang♥ It feels so good... My belly is getting all bloated with Sister's cock...♡ It feels so goooood♡"
"Yeah, I like it too. So, I'm going to move now."
I wanted to give her more time to adjust, but I had reached my limit.
-Squelch! Shhhhuuuuck!
"Hu-hi-giiiik♥"
I started moving while holding Luni's pelvis with both hands.
It was a tightness that felt like the walls were clinging to my cock and coming