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Kyoya teleported back home, only to be surprised to find Asagi Aiba in his living room.

"Asagi, what are you doing here?"

Hearing Kyoya's voice, Asagi turned around happily.

But when she saw Nagisa Akatsuki and Yukina Himeragi behind him, she froze.

Seeing Asagi's puzzled expression, I explained the situation to her.

——

"So, starting today, Nagisa will be living with me. And this is Yukina Himeragi, an Attack Mage dispatched by the Lion King Agency."

"Because of Nagisa's status as the Fourth Primogenitor, she'll be moving in with me as well."

Hearing this explanation, Asagi's eyes flickered, her expression subtle, but she quickly returned to her usual demeanor.

"If that's the case, then I'll move in with you too, Kyoya!" Asagi looked directly at me and said slowly.

"Uh... Sure, no problem. You can sleep here tonight. Asagi, go chat with Nagisa and Yukina for a while! I'll go tidy up your rooms!"

Kyoya was naturally thrilled by Asagi's request.

It seemed Asagi was jealous. Thinking of this, I went to tidy up the rooms with a smile.

The atmosphere in the living room was a bit strange. The three girls stared at each other, eyes wide!

"Asagi-onee-san, you were jealous just now, weren't you? You like Kyoya, right?" Nagisa finally blinked and asked with a giggle.

"!!!"

This made Asagi flustered, her face turning red.

"Hehe~ Don't worry! Kyoya, that big pervert, definitely won't let a beautiful girl like Asagi-onee-san get away!"

"Besides, just now, he held Natsuki-sensei and gave her a big kiss."

Saying this, Nagisa held Asagi's hand and giggled. "So, from now on, Asagi-onee-san, we're family!"

Asagi was also surprised by Nagisa's words, but then, thinking of Kyoya, a blush appeared on her face, and she nodded.

Only Yukina looked at the two of them, completely bewildered. 'Huh? What's going on?'

Seeing Yukina's innocent expression, Nagisa decided to tease her a little. "Yukina-chan, are you confused? Actually, Kyoya brought you here because he wants you to be his wife. It's just..."

"What!!!" Yukina was shocked and completely embarrassed.

"Th-that's not going to happen!!"

However, after Yukina's indignant outburst, she fell into deep thought, glancing nervously towards Kyoya's room.

——

The next day, to make life easier, I found a beautiful spot and, with a wave of my hand, created a tall, elegant castle.

Looking at my masterpiece, I nodded in satisfaction, then planned to tour Itogami Island.

——

As I was strolling around, I suddenly sensed someone following me. I smiled and walked into a secluded alley.

"Huh? Where did he go? I clearly saw him come in here. Why is he gone?"

When the figure entered the alley, it found that Kyoya had disappeared.

Just as she was about to turn around and leave in confusion, she was surprised to find me standing in front of her. So she exclaimed in surprise, "What? Wh-when did you notice me...?"

Seeing who was following me, I was a little surprised. Although she was dressed like a delinquent, I recognized her—Naughty brat, December.

Her real identity was the tenth familiar of the Fourth Primogenitor—Dabih-Crystallus—She possessed the ability to manipulate minds.

She was initially obtained by the Third Primogenitor, then given to Vatler. Due to Vatler's indulgence, she was allowed to roam free, and she eventually became the leader of the "Tartarus Lapse," specializing in attacking the special wards for Demonkind—causing a great deal of chaos.

But she was also a cute Loli who could be molded!

"If it isn't the naughty brat, December."

Seeing that her identity had been exposed, December was startled. But hearing my name for her, she puffed up her cheeks angrily.

"Damn it, who's a naughty brat—I'LL BITE YOU!"

Saying that, December lunged at me, grabbing my hand and preparing to bite.

But before she could bite my arm, I picked her up and placed her on my lap. Then I sealed her powers and proceeded to spank—December's little ass.

"Brat, you want to bite me?"

Kyoya spanked December's bottom as he spoke.

——

——

The 'smack smack smack' sounds mixed with December's cries echoed in the alley.

"Waaah... I was wrong, please stop hitting me..."

Seeing December cry, and her little bottom all swollen, I realized I might have gone a bit overboard.

Then, I smiled sheepishly and said, "I didn't mean to."

Hearing this, December glared at me with tears in her eyes, as if to say, 'Do you think I'm stupid?'

"Okay, okay, I apologize. I shouldn't have spanked your little bottom. Alright?"

"Now, can you tell me why you were following me?"

Saying this, I used my Magic to heal December's injuries while wiping away her tears.

Feeling the strange sensation on her bottom, December's face flushed slightly, and she pouted. "I-I smelled a delicious scent on you, that's why I followed you!"

Me: "....."

'Good grief, she was planning on sucking my blood, wasn't she?' I thought, rolling my eyes.

After thinking for a moment, I stroked December's little head and smiled. "If you stay with me, I promise you can suck my blood in the future! How about it?"

Hearing my words, December was tempted.

"You can even meet The Fourth Primogenitor!" I added, seeing her waver.

"What?! The Fourth Primogenitor! Are you trying to get the Fourth Primogenitor to devour me?!"

Hearing the words "Fourth Primogenitor," December's face turned pale, and she couldn't help but feel scared.

After all, the reason for her existence was to house the Fourth Primogenitor's familiar and then be devoured by the Fourth Primogenitor.

Seeing the fear in December's eyes, I hugged her and comforted her. "Idiot, if I wanted to do that, you wouldn't be able to resist. Besides, even The Fourth Primogenitor is perfectly fine!"

"Don't be afraid. I don't see you as a tool. You're just a brat who hasn't grown up yet. Don't worry! We'll treat you like family."

Hearing my words, December looked up at my face, her eyes becoming increasingly dazed.

For some reason, she felt like she could trust me, and she believed my words implicitly.

"In that case, you have to take care of me for the rest of my life!"

After a moment, December's lips curled into a satisfied smile, and she said to me playfully.

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