Shinmai Maou no Keiyakusha - Volume 13 - Chapter 4

Chapter 4

Master Servant Curse That Won’t be Quiet

The previous Demon Lord’s daughter who inherited his greatest power, is Naruse Mio.

In the aftermath of a life-and-death battle, The Village changed the orders from observing her, to eliminating her. So, they sent the wielder of “Byakko, Hayase Takashi after her.

Basara’s group was able to suppress Byakko, and the order returned to observing Mio. With no question on Yuki’s conduct, it all calmed down with everything going back to normal.

Yuki also returned to her position as Mio’s observer.

—However, there’s one big change.

Yuki now lives with Basara’s group.

Furthermore —after making sure her things arrive at the Toujou household.

They all gather in the living room after dinner, and Maria speaks.

“Aah, Yuki-san, since we’ll be living together from now on, there’s something I want you to be careful of for the time being”

“Something to be careful of?”

At Yuki looking back at her with her head to the side, Maria nods a “yes”.

“However, it’s difficult and would take time to explain in words, so for it to be quick, I’d rather you see it for yourself”

Saying that, Maria suddenly pushes Yuki’s shoulder with both hands.

“Ah—“

Yuki who’s sitting on the sofa falls to the side —towards Basara.

“…Ah, are you okay Yuki?”

Basara holds Yuki gently. No one knows what Maria is thinking of, but Yuki is close to Basara like this.

“Yeah… Thank you, Basara”

Together with her words of thanks, she shows her gratitude with action too. She holds Basara tight. But there’s someone else who turns red in the face.

It’s Mio, who’s sitting on a single sofa alone.

“W-wait, Nonaka! What are you doing…!?”

Suddenly standing up, Mio reacts with a shout, this is something Yuki has seen before.

Previously —when Basara first transferred into Hijirigasaka Academy, she had hugged Basara after having not met him for five years and Mio had the same reaction then. Hence, “This is because she pushed me. I don’t think you should get angry at me”

Yuki says, putting the blame on Maria while holding on to Basara.

“…!”

Mio shows her next reaction. Her shoulders start trembling. Surely, she’s jealous. Like before, she thinks of interjecting between Yuki and Basara.

That being said —at the next moment, Yuki sees a reaction from Mio that’s beyond her expectation.

“No… No way…. haah… I’m, again…. fuaaahn”

As she leans down on the floor, she holds herself while letting out sweet moans.

“H-hey Mio, could it be…”

Basara, who’s surprised, hurries to Mio on the floor, hoisting her up.

“Maria, what did you do…!?”

“It’s just…I think this is the fastest way to show your relationship”

While Maria says that, Yuki, who doesn’t understand what’s happening, furrows her eyebrows.

…That’s right.

She’s seen Mio like this before. Previously, when Yuki arrived at the Toujou household.

At that time —when Basara saw her showering, Mio had the same reaction. Basara had told her that’s because Mio wasn’t feeling well.

“…Basara, what is this?”

As she pushes him, Basara is at a loss for words.

“Truth is, Basara-san and Mio-sama are tied together with a special magic, the “master-servant contract” … This is one of the side effects, a curse that takes place because of certain situations.”

In his place, Maria explains the situation to Yuki who doesn’t know anything.

With the master-servant contract between Basara and Mio, they can sense each other’s location and as they deepen their bond as master and servant, their power would increase, and they decided that this is beneficial to protect Mio.

However, with Mio in the lower position, if she feels any sort of bad feelings towards Basara such as betrayal, the contract’s curse would activate, based on the magic used to tie the contract.

And what they used to tie the contract was the succubus Maria’s magic. Because of that, the curse that happens to Mio is based on that –that is, an aphrodisiac effect curse.

“…”

Yuki who receives this explanation looks wordlessly at Mio.

“Mmm… aah…. haah… no… mm”

Mio, who’s moaning in the aphrodisiac effect, is letting out a seductiveness beyond her belief.

…Amazing… Naruse-san…

In just a moment, the living room air is one that’s seductive.

This is the first time Yuki has seen something like this. Someone the same age as her, someone a girl like her… That Mio now, is in front of her, trembling from pleasure.

Yuki gulps down, and Maria giggles.

“Despite what you see, it’s a rather dangerous curse… There’s only one way to relieve it… That is to enforce the master-servant relationship. In short, to submit to the master.”

“Submit…?”

“…Of course, you’ll be able to see it from now on”

While saying that, Maria smiles a deep, meaningful smile.

“H-hey Maria, showing that to Yuki isn’t right… It should be in mine or Mio’s room”

While his face is red, supporting Mio, Basara objects. But,

“What are you saying, Basara-san? As we live under the same roof you shouldn’t hide things like that. Having this explained clearly to Yuki-san is for the best. If you don’t do that, would it be truly clear?”

“No, that might be the case but”

But Basara shows a troubled look.

“At least give us some time to prepare, suddenly having Mio fall under the curse, then showing that to Yuki… That’s not good for Mio…”

“Basara-san, you’re such a feminist… But I think it'll be okay?”

Saying that, Maria leans down to Mio, whispering in her ears.

“Is it okay, Mio-sama…?”

With that, she begins whispering in Mio’s ears. Yuki cannot hear what Maria is saying to Mio from there on.

Even though he’s close to Mio, it’s even to the extent that Basara can’t hear.

Furthermore —the one person who Maria is whispering to, Mio, suddenly closed both her eyes tightly.

“…Ah… got it… Mm, I'll show… Nonaka…”

With a weak voice, she agrees with Maria.

“H-hey, Mio…!?”

Basara says, troubled.

“Mm… It’s fine… Please, Basara, do it here”

As she holds on to Basara, Mio pleads with glazed eyes.

“See, Mio-sama says it’s fine. So Basara-san. So that she’s no longer in pain, do the usual for her.

“…Do you really not mind, Mio?”

Basara asks once more, and Mio nods. Hence,

“…!”

Accepting Mio’s will, Basara moves behind her.

…What’s Basara doing…?

Yuki, who doesn’t understand what “submit” means, watches the situation unfold.

“Eh—?”

And what she sees in the next moment makes her dumbfounded.

Basara —begins groping Mio’s breasts from behind her.

At that moment Basara gropes her breasts while she’s in an aroused state,

“Mmm—aah…. h-haah…. no… Fuaah ♥”

Naruse Mio is feeling such great pleasure and lets out melty sweet moans.

Inside her hot pants —in the depth of her underwear, she feels a throb.

Basara who’s attending to her is still rubbing her breasts with reluctance, but even so, Mio finds herself climaxing lightly. That condition makes clear one thing that they cannot fool themselves on.

…My breasts are more sensitive than before… 

She feels it even more than the other day when they used maple syrup.

Mio’s breasts have enough volume that their lewd shape from being groped is obvious even under her clothes. The shape of those large breasts groped by Basara is now —being displayed to Yuki.

“…”

Looking at Yuki, who might’ve thought that it would stop soon, one can see she’s flushed red as she stands still. She’s different from her usual self who suppresses her emotions.

Her reactions tell Mio exactly how lewd she is now.

“Ah…. yaah… Fuh… aaah… haah”

Mio feels great shame, her body trembling.

Even so, Mio continues to show her lewd self to Yuki.

Because Maria had told her.

If she shows her submitting to Basara, it'll become a restraint in regard to Yuki.

Mio can’t help but feel jealous when she sees Basara with Yuki. Most likely, it’ll be seen as her crossing her master, starting up the aphrodisiac curse. However, if the curse starts up then there’s only one way to stop it and that’s for Mio to submit to Basara.

Mio would like to avoid something embarrassing like that but,

…But, more than me. 

More than her, Yuki would hate this happening more.

This is Yuki who reacts to weird things. There’s no doubt she would like to pursue Basara now they’re living together. However, if she knows that doing that would activate the master-servant curse and Mio would have to receive pleasure from Basara, surely, she won’t try anything funny.

Maria said that and that’s why Mio accepted her suggestion of showing this side of her to Yuki.

…That’s right… it’s for that reason…

To get Yuki to give up, they may have to do something more intense.

—Hence Mio leans into pleasure.

It’s not hard to get more intense. If she remembers how she’s taken by Basara with the maple syrup the other day, the memory of intense pleasure comes back to her.

“—“

No good… When she thinks that, it’s too late. She wanted it to surface just a little bit, but connecting that memory to the current sensation she’s feeling now, it becomes very vivid inside of her, “No—Fuaaaaaah ♥”

Mio’s eyes are melty almost right away, drowning in a whirlpool of pleasure all at once.

Hence —what’s beyond that is a Mio who can only be described as lewd.

With her legs spread, Mio bucks her hips up in pleasure.

“Aahn… Fuaah, mmm… oniichan ♥Noo…. Aahn, haah…. Oni chan ♥”

As Basara gropes her breasts, Mio who feels the pleasure moves her hips visibly.

With that as she moves her hips, her honey that wets her panties, spills over her hot pants, wetting her inner thighs.

The pleasure from Basara groping her breasts is enough to make her tremble in pleasure… And she’s showing that to Yuki.

To Yuki, Basara is her precious childhood friend.

To Mio, Basara is her precious family, her older brother… her absolute master. With that,

“…”

As she looks at this, Yuki has collapsed on the floor, and Mio feels a sense of superiority. At that,

“Fufufu, Mio-sama is making such a lewd face… I’m going to record all of these expressions”

Maria, who says that as if she’s having fun, is recording her with a video camera, but Mio no longer cares.

She’s Basara’s underling, and she’s submitting to her master.

There’s no problem. There’s nothing weird about it. Then,

“…Here I go, Mio”

Basara declares in his low voice, it’s a notice for Mio,

“…Mm…. Please, oniichan…”

Mio looks back behind her shoulders, nodding, and at that moment —Basara’s hands which are groping her hold on to her tighter.

“—“

At that moment —Mio bucks her body as it trembles.

While her breasts are groped, while Yuki is watching, while Maria is recording.

Naruse Mio reaches her climax, submitting to Toujou Basara.

And then.

“Mm…. aah…. haah…. aaah… ♥”

While Mio is lying on the couch, feeling the reverberation of her intense climax,

“—So, it’s like this. If the master-servant contract curse activates, Mio-sama would have to submit to Basara-san in this way. That being said, the master-servant contract between them is necessary for the upcoming battles, so please understand,”

“…”

While Maria says this cheerfully, Yuki listens while slumped on the floor. She can’t say anything in sight of Mio who submitted to Basara which was sensational.

Maria stands by her side, looking down.

“But… Well, it must be hard for you to accept, Yuki-san? After all, you finally live under the same roof as Basara-san and you’ll have to put up with this.”

Saying that, the loli succubus giggles.

“As such, this is just my suggestion but… If it’s okay with you, on the next full moon, how about you also tie the master-servant contract with Basara-san”

“H-hey, what are you saying Maria!”

Suddenly, Basara raises his voice. But Maria pays him no mind.

“If Yuki-san ties the master-servant contract with Basara-san there’s a huge plus in both battle prowess and strategy… And besides, if both of you are servants to Basara-san, the curse would not activate so it doesn’t trouble him. If the curse doesn’t activate because of Yuki-san, it would help both Mio-sama and Basara-san.”

“…”

Maria’s words are worth listening to.

With that, she leans into Yuki’s ears.

“More than that, with this, Mio-sama has an advantage in pursuing Basara-san, you know? With this, she can deepen her bond with Basara-san more assertively. If you tie the master-servant contract, then you two would be equal… What do you think, Yuki-san?”

Just like she whispered to Mio earlier, Maria is now whispering to Yuki.

The words that deal a death blow towards Yuki.

—As such, she’s no longer hesitant.

So that she can do all she can to help Basara - and then to not lose to Mio.

There’s only one answer to begin with.

So, with a nod, Nonaka Yuki says,

With a voice full of resolve.

“—I understand. I'll also tie the master-servant contract with Basara.”