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  Mio hesitated for a moment, then nodded.

  "Alright, Onii-. I'll form a tract with you," she agreed.

  Maria, seeing that they had both agreed, gririumphantly.

  She began drawing a Magic circle.

  As a succubus—the Magic she used often had strange side effects.

  This particur tract Magic circle, for example, would cause an untrolble desire for physical intimacy if the servant disobeyed their master's orders or felt guilty.

  The only way to alleviate this side effect was through... well, you know...

  Otherwise, it would persist indefinitely.

  Roy watched Maria prepare the Magic circle with amusement.

  "Onii-, let me tell you about the Demon Realm," Mio offered, expining the various fas and their retionships.

  Roy listened with i.

  Mio's father was the previous Demon Lord, an incredibly powerful being. Although he was rumored to be dead, he had actually faked his death.

  Roy didn't know why he had dohat.

  Maria's father was also the previous Demon Lord—making Mio and Maria half-sisters.

  Mio, with her exceptional talent and strength, surpassed all her peers and even some older Demons.

  But the immense power ied from her father was suppressing her own abilities.

  Roy found this rather ironic. The old Demon Lord hadn't made proper arras for his daughter before his "death" and had instead created problems for her.

  He chuckled and shook his head, then turned his attention baaria.

  "Onii-, Mio-sama, the tract Magic circle is ready. We begin now," Maria announced with a smile.

  "Alright, let's start," Roy said, taking Mio to the ter of the Magic circle.

  "Sihis is Mio-sama's first time using tract Magic, let me assist you," Maria offered, taking Mio's hand.

  Mio didn't refuse.

  "Onii-, all you have to do is kiss the Magic circle that will appear on Mio-sama's arm," Maria expio Roy.

  "Okay," Roy replied with a nod.

  Maria activated the Magic circle.

  But the Magic circle didn't appear on Mio's arm. It appeared on Roy's arm instead.

  As expected, Maria had tricked them.

  She must have been following Zolgear's orders, and there was definitely some hidden motive behind this.

  "Wait—Maria, what's going on?" Mio excimed, fused and flustered as she saw the glowing Magic circle on Roy's arm.

  "Oh? That's stra seems I made a mistake somewhere," Maria replied with a feigned innoce.

  "What do we do now?" Mio asked, worried.

  "Well, the Magic has already been activated. We 't stop it now. How about Mio-sama kisses Onii-'s hand instead?" Maria suggested with a mischievous grin.

  "What?!" Mio blushed.

  She didn't mind being Roy's servant, but the thought of it made her incredibly shy.

  After all—she would have to obey her master unditionally.

  She g Roy, her face burning red.

  "Mio-sama, hurry up! The Magic circle on Onii-'s arm is about to disappear. If you don't kiss it in time, there might be sequences," Maria urged, notig that the Magic circle was flickering.

  "Ah..." Mio hesitated, her heart pounding.

  After a brief internal struggle, she finally made up her mind.

  She approached Roy aly kissed the back of his hand.

  However, due to her hesitation, the Magic circle had already vanished by the time her lips touched his skin.

  "It... it's gone!" Maria excimed in surprise.

  Mio froze, her body suddenly paralyzed. A purple colr with a heart-shaped pattern appeared around her neck.

  "What... what's happening?" she stammered, a strange sensation c through her body.

  She colpsed to the ground, her legs no longer able to support her.

  "What's wrong?" Roy asked, pretending to be ed, though he was secretly thrilled.

  "The curse has been activated," Maria expined.

  "Curse?" Roy asked, pying along.

  "Ehehe..." Maria giggled nervously, then expined, "The Master-Servant tract is meant to ehe servant's loyalty. But because I used my Magic, if the servant disobeys the Master's orders, they'll bee—insatiable..."

  Mio, lying on the floor, her face flushed and her body tingling, moaned, "Stop talking and help me!"

  Even Roy couldn't help but gulp, seeing Mio's alluring state.

  "Don't worry, as long as you obey Master's orders, the curse will be lifted," Maria reassured her with a smile.

  ....

  Mio looked at Roy with pleading eyes.

  "Onii-, please help me!"

  Roy couldn't refuse such a request. Ign Maria's presence, he began to "discipline" Mio.

  "Amazing!!" Maria cheered from the sidelines, her face flushed with excitement.

  Roy eechless. Not only was Maria not embarrassed, but she was actively cheering him on. It seemed he would have to 'discipline' her as well.

  He couldn't let her keep leading him around by the nose.

  ....

  Within few minutes, Mio had climaxed seven times, eventually passing out from exhaustion.

  Roy gred at Maria, who was still cheering.

  Maria, sensing his dangerous gaze, chuckled nervously. "Um, Onii-, I'll go bay room and sleep now."

  She scurried away.

  Roy sighed and carried Mio to bed.

  ...

  The m, Roy woke up to find Mio staring at him with a lovestruck expression.

  "Mio, what are you looking at?"

  "Onii-, I... I..." Mio stammered, then buried her fa his chest, flustered.

  Roy chuckled. Mio was quite shy, it seemed.

  But although she could trol her words, her body was ho.

  And due to the side effect of the tract, whenever Mio disobeyed her Master's orders, she would experience a strange sensation.

  A purple, heart-shaped colr appeared around her neck.

  Mio moaned, her face turning crimson.

  "Mio, what's wrong?" Roy asked with a pyful smirk.

  "Onii-..." Mio, seeing his teasing expression, realized he was just messing with her. She pouted and snuggled closer.

  "Haha, alright, alright, I get it," Roy said, giving in to her adorable act.

  He spent the m "training" her until Maria's calls finally forced them out of bed.

  ...

  During breakfast, Mio gred at Maria, who was smirking at her.

  If it weren't for Maria's messed-up spell, she wouldn't be in this state. But—it wasn't so bad either.

  She g Roy and blushed.

  "Mio, I don't think we should let Maria tease you like this. How about we make her sign a tract with me too?" Roy suggested with a chuckle after breakfast, while Maria was ing up i.

  Mio's eyes lit up. This erfect opportunity for revenge.

  "That's a great idea! I'll go talk to her. If she doesn't agree, hmph!" Mio decred with a mischievous grin.

  She went to the kit and told Maria about the pn.

  Maria froze, hearing Mio's words. She hadn't expected this.

  Although she was a succubus, she valued her chastity.

  Even Zolgear—hadn't been able to sway her. She had used a special lock to protect herself.

  No one could take her first time without her sent.

  Maria actually had a more developed figure than Mio, but due to the lock, she appeared as a little girl.

  "But Mio-sama, the tract Magi only be activated during a full moon," Maria said with a nervous ugh.

  "Is that so?" Mio asked suspiciously.

  "Of course," Maria insisted with a nod.

  "Fine. We'll just have to wait until month then," Mio said, disappoihat she could her revenge immediately. But she wasn't going to let Maria off the hook.

  The full moon had already passed. They would have to wait for the one.

  "Ugh..." Maria's face fell.

  She relutly agreed. She had a month to e up with a pn.

  Roy, in the living room, overheard their versation and chuckled. Maria wouldn't be able to escape now.

  ...

  At school...

  "Good m, Nonaka-san," Roy greeted Yuki with a smile as he ehe .

  Yuki frowned, seeing Roy and Mio holding hands.

  ????

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