Slowly coming into awareness, Aika opened her eyes slowly as she yawned, and stretched her naked body for a bit before slumping her head back onto Yuuji's chest and wrapping her arms and legs around him once again. Her lips curled into a comfortable, blissful smile.
It was an extremely exhausting yet wonderful day yesterday. They've done a lot of things together upon returning from Tatsuya's home.
Just as Yuuji promised, they flew around a bit in their house, hand in hand, and went out to the massive swimming pool beyond the living room.
And after they admired the beauty of their home, they began sharing a kiss above the clear blue water, twirling around slowly in mid-air as they embraced each other tightly.
Then, they spent the rest of the day making love with each other in the pool, the living room, the leisure room, the kitchen, the dining room, and finally ending it in Yuuji's room where they'd continued until just a few hours ago. Even when Yuuji was cooking, Aika would pleasure him using her mouth and hand, and when they ate, they'd take turns. One would eat and the other would pleasure them and then exchange.
It was such an amazing day. Her womb was never empty, having been filled with Yuuji's love to the brim again and again. Even now, she could still feel his warmth inside her, giving her the greatest happiness.
Even though both of them were still covered in sweat, she didn't mind the fact. Or rather, she loved the feeling. His fragrant, masculine smell and his warmth make her feel so happy, warm, and horny at the same time; the best combination of all.
Aika turned her head up slightly and giggled inwardly when she saw his peacefully sleeping face. He still looked super handsome, but this unguarded sleeping face of his made him look really adorable!
Aika slowly rise up towards him and gave him a peck on his cheek, causing him to squirm a bit, before she placed her elbow on the bed and stared at him.
Fufu~ He looks so cute, no one would ever believe that he's such a monster in bed~
Aika glanced down and saw how his divine rod, which had given her endless love the previous day, was already pointing up towards the sky, pitching up a tall, massive tent with their duvet.
Mmh~ You're already so energetic in the morning, even though we did all that the entire day yesterday~
Aika petted his dick gently over the duvet, causing it to twitch in response to her touch.
"Hehe~ Let's calm you down first~"
Slowly unwrapping herself from Yuuji and moving away slightly, Aika dove under the duvet and moved to the bottom of the bed in between Yuuji's legs and faced the proudly erect, tall, and masculine rod of his, longer than the length of her head, that had given her plenty of love the previous day.
Her eyes narrowed and her cheeks blushed redly as she stare at it in amazement. No matter how many times she looked at it, she couldn't help but feel this way.
She traced its length slowly with her fingers, causing it to twitch in response, and wrapped her hand around it while she cupped his full, heavy balls with the other.
Then, she leaned in, burying her face to the base of his rod and breathing in a lungful of his sexy, lewd scent, and began rubbing her cheeks against it.
Ah~ This is the best~ Oh, that's right! Let's take a selfie! I've always wanted to take those lewd pictures I've seen in porn~!
She kissed his balls softly, promising to return shortly, before slowly making her way back up and picking up her phone that had been resting just beside her head pillow.
She unlocked it, but just as she was about to open her camera, her eyes widened in shock.
"What?!"
Her panicked voice woke Yuuji up. He immediately sprang up and turned towards her.
"What's wrong, Aika?! Did something happen?"
"Y-Yuuji… W-We're in trouble!"
"What's wrong?!"
Without even answering him, Aika shoved her phone to his face and showed him her screen.
The first thing he noticed that was on her screen was her wallpaper. It was one of his more… daring selfies he sent to her begrudgingly after her begging. He couldn't understand how she convinced him that it was a good idea to send her something like that at the time. But thinking back to it now, he realized that she had already charmed him by then.
Then, the next thing he noticed was her clock. It read 8:30, and immediately, his eyes went wide.
"What?! It's already 8:30?!!!"
"Yes! We need to tidy up quickly!!! The entire house is a mess!!!"
Yuuji looked around and saw their furniture out of place, some decorations knocked down, and the entire room filled with the smell of sex and bodily fluids.
Even though their natural scent had a nice fragrant and the smell of their sex more pleasant than normal, they wouldn't be able to disguise it as the scent of a room freshener…
Moreover, he remembered that their clothes and underwear were spread out all over the house when they fucked each other all around the first floor!
"We need to clean up and take a bath now!!! Yuuji and Miyuki will be arriving in half an hour!!!"
"You clean up!! I need to take a bath!!!! I'll go in your bath, okay?!"
"Alright! I'll get in too after I'm done cleaning!"
"Uhn! Make it quick!!!"
Without even getting dressed, Yuuji cast his magic and tear through the air and out of his room while Aika immediately head to Yuuji's bathroom.
With his speed and precision, Yuuji managed to pick up all of their clothes and underwear that they took off one by one in separate places, and tidied up their kitchen, leisure room, dining room, and living room in around fifteen minutes. Then, he quickly went to Aika's room to get some clothes and underwear for her and rushed back to his room.
Then, he quickly tidied up the couches, table, and decor in his room, and then head into the bathroom.
"Aika! I've brought you some clothes and underwear! They're in the first walk-in closet!"
Yuuji said as he went past the showering Aika and into the shower in his mini-gym.
"Uhn! Thank you!"
The two quickly prepared themselves, cleaning off the sweat and fluids from the previous day-filled debauchery off their body, and dressing up as quickly as they could in this chaotic morning.
--------------------------------X--------------------------------
Arriving in front of the giant gate and beautiful arch of pure white, intricately designed and decorated with masterfully crafted engravings in a flowery pattern, Tatsuya stood in awe and shock with a box of traditional Japanese sweets in his hands. Beside him, Miyuki was similarly in a state of shock and disbelief as the two stared dumbfoundedly at the massive, luxurious mansion in the distance.
Even when they were this far away, they couldn't see the entire width of the mansion without turning their neck from side to side. Its size could easily fit more than 10 of the houses they're living in now, and if they would include the courtyard…
In terms of size, it would definitely be even larger than Yotsuba's main estate…
"O-Onii-sama… I-I didn't know they were this… wealthy."
"...I didn't know either. But… I think I have some ideas as to why they lived in such a place."
Tatsuya walked towards the intercom that was just beside the magnificent arch and pressed a button.
"Yuuji. We've arrived."
A few moments later, a familiar yet hurried, somewhat agitated voice came through.
"A-Ah! Yes! We'll be right there! Please come in first!!!"
Tatsuya tilted his head slightly, wondering why Yuuji sounded like that.
"Onii-sama… Did something happen?"
"I'm not sure…"
Just then, the pure white gates began to open inside before closing back after the two entered.
They walked in, following the straight cobblestone path that led into the center of the garden where a magnificent fountain, serving as its centerpiece, stood with tiny rainbows from the spraying water and various colored bushes of flowers surrounding it.
The cobblestone path circled around the fountain, branching out into the east, west, and north of the fountain.
"It's really beautiful…"
"Mm. It truly is…"
As they followed the path, Miyuki couldn't help but look around in amazement. It was… so beautiful and perfect. The grass that covered the massive courtyard, the trees lining the perimeter of the garden, the bushes of flowers, everything was so perfect, as if they had just been taken care of by multiple, extremely skilled gardeners right before their arrival.
The two soon arrived at the entry where a massive wooden double door greeted them. It was smooth, with no intricate engravings or the like, and polished, giving it a more modern look that suited the current era.
A few moments later, the door opened, revealing the slightly disheveled figures of Yuuji and Aika. Their hair was wet and messier than how the two remembered it yesterday, and their clothes were also a bit disarranged.
And while they were not breathing heavily, it was obvious that they came to greet them in a hurry.
"H-Hi, good morning!"
"H-Heeeyyy~! It's nice to see you~!"
"...I'm sorry, did we came early?"
"A-Ah, no you didn't. We were the pens at fault. We had just finished exercising together when we realized you were coming soon, so we took a quick shower before you came."
"Uhn uhn!"
Tatsuya and Miyuki looked at them weirdly, but they didn't ask any further in the end.
"I see. I'd love to see your training grounds. Considering the size of your home, it must be quite spacious."
"Ah, we were just exercising in the small private gym I have in my room. I don't know if we have a large training ground like yours. We've only gone around the first floor of our home. There's still the second floor and probably several floors below that we haven't seen yet. And we thought we could explore it together with the two of you today."
"I see. I look forward to it."
"Likewise. Ah, please come in."
Letting the two inside, Yuuji and Aika lead them to the living room.
As they walked slightly ahead, the two let out a silent sigh and whispered quietly to each other while Tatsuya and Miyuki's attention was stolen by the magnificent, grand interior of their home.
"Yuuji! I forgot! Have you sprayed some air freshener all over the house?"
"I did when you were dressing up. I'm so glad there's some in the utility room."
"Oooh!!! Good job! Thank you, Yuuji!"
"Ah. I'm super relieved… If I didn't, they might have noticed the smell. We went… really wild all around the house yesterday."
"Uhn…"
The two blushed slightly at the recollection of yesterday's events… Even though they were a new couple with extremely high libido, they still went a bit too far yesterday.
Though, none of them could deny that it was fun.
"Ah, that's right. Here you go. Miyuki and I had brought something for you to welcome you to this world."
Tatsuya handed the box of Japanese sweets to Yuuji.
"Ooooh~! Thank you so much~!!!"
"Thank you very much, Tatsuya, Miyuki-san. We really appreciate it. Then, I'll go and put this in the fridge first before we go explore the house so we can enjoy it together later. You guys can wait for me in the living room."
"Okay~! Hurry back~"
A few moments later, Yuuji returned to the living room where Aika, Tatsuya, and Miyuki were waiting, and the four went out of the living room to where the swimming pool was first as it was the closest.
"This is amazing… It's so big…"
Miyuki said in awe, her eyes widened as the beautiful view entered her sight.
The beautiful swimming pool seemed to glimmer beautifully under the sky as light bounced off the clear, blue water. To its left and right, there was a massive patio on both sides, surrounded by lush trees, greenery, and flowers with several wooden beach benches, sofas, small coffee tables, and patio umbrellas to complete it. There were also several bbq grills, a fridge, and essentially, a small kitchen at the corner of the patio.
"This is truly amazing and beautiful. You could easily hold a banquet there, Yuuji."
"Ahahaha, I don't know about a banquet, but I do think we can easily invite our friends here in the future."
"Indeed. It would be fun."
As the two boys walked around the patio to the left of the swimming pool, Aika accompanied Miyuki who was still in awe of the things surrounding her.
Although she was a young lady of the Yotsuba family, she still couldn't help but be amazed by the beauty of Yuuji and Aika's home.
"Aika-san, what room is this?"
Miyuki pointed towards a quadrant-shaped room at the right corner of the swimming pool.
"Ah, this is the spa~ We can go in here to warm up after we finish swimming~ Isn't that great~!"
"Oooh! That sounds amazing indeed."
"Hehe~ I tried it yesterday, and it was very fun~"
At least, as far as I remembered… I-I could only remember how intensely Yuuji was fucking me…
"You should try it out too sometimes~!"
"Really? Thank you very much."
Seeing her beautiful, pure smile, Aika couldn't help but feel a bit guilty for thinking of such things before her…
"Hehe~ How about we go in together later~"
"L-Later? Uhm, I-I don't know if we would be staying for long."
"Eh? Do you have business later on?"
"No, we don't. But onii-sama and I haven't decided yet so…"
"Hm… Then let's ask him, now~!"
"Eh?"
Aika waved her hands in the air and began raising her voice to Tatsuya and Yuuji who were still looking around the patio.
"OOOIIIII! Tatsuya! You and Miyuki should stay for the night!!! We've got plenty of rooms for you!"
"A-Aika-san!"
Tatsuya and Yuuji turned towards them and began approaching them.
"Oi, Aika. What are you saying all of a sudden?
"Eh~? Isn't it fine~? We've got plenty of rooms, and just one night wouldn't hurt right~?"
"Well, we do… But what if they're busy?"
"Miyuki told me that they're free today."
"Oh..."
Yuuji slowly glanced towards Tatsuya and Miyuki, who was fidgeting before him with slightly blushing cheeks, averting her gaze away just like a small child who had been caught doing something embarrassing.
"Do you want to stay for night, Miyuki?"
"E-Eh? I-I do… B-But if onii-sama has other matters to attend to, then it is fine."
"No. I have nothing planned today, so if you'd like to stay for the night, you should ask them."
"Onii-sama…"
Miyuki looked up towards him, her hands clasped together before her chest.
"Go on."
With a gentle smile on his face, Tatsuya cocked his head towards Yuuji and Aika.
"I understand, onii-sama. Thank you."
"Mm."
Miyuki then turned towards Yuuji and Aika, her face still slightly blushing, and bowed towards them.
"I-If it is fine with you, will you let us spend the night here?"
"Hehe~ Of course~! I was the one who invited you first~! Let's have a ton of fun together, Miyuki~!"
"Of course. It would be our pleasure."
"Thank you very much!"
Aika then approached Miyuki and hugged her from the side with a giggle.
"Hehe~ Let's sleep together, Miyuki~ My bed is super big, so both of us would be able to fit together~"
Aika had never slept in her own room and bed before since she had always slept with Yuuji in his room. But considering how massive it was, she's sure there would be plenty of room for both of them.
"Eh?! U-Uhm, i-is there no other room…?"
"Hm, I'm not sure. There are only three rooms on this floor. Two guest suites and the master suite. My room is in one of the guest suites, while Yuuji was in the master suite. And even if there is another room below or on the second floor, I wouldn't want you to sleep there alone. So…"
"I-I see… T-Then, I will be in your care…"
"Uhn~! Hehehe~"
With the two girls now much closer, or rather, Aika sticking closer to Miyuki now, Yuuji and Aika began leading Tatsuya and Miyuki around the first floor.
Then, they head up to the second floor through the spiraling stairs in front of the dining room, where they end up in some sort of a parlor or a massive game room.
There were polished, beautifully crafted, wooden tables and chairs all around and a beautiful pool table at the center, all of which standing above a beautiful maroon carpet that covered the entire floor.
At the left side of the massive game room, there was a wet bar with a collection of alcohol in pristine glass bottles displayed on the shelves.
The moment they saw it, Tatsuya and Miyuki, and even Aika immediately turned slowly towards Yuuji.
"W-What?! Why are you guys looking at me?! I didn't buy them! I didn't even know this existed!!!"
"...I understand. The bar might not be fitted for us, but the rest of the room seemed quite cozy. It is a beautiful room."
They then head further inside where they found another room.
When they entered, they saw a massive room, one identical to the guest suite, though slightly larger in size. Just like the guest suites and the master suite, there was a walk-in-closet as well as their own personal bathroom and shower room.
Then as they walked around further around the big opening at the center right above the living room, they could only find even more guest suites, totalling six, before they returned to the game room.
Going down the spiraling stairs back to the first floor, they head down through the spiraling staircase again to the underground floor.
Upon reaching the bottom of the stairs, they arrived at the end of quite a large and long hallway. To their left, they could see an extremely large facility with high-advanced computers, machines, and human-sized pod-like devices through the clear glass. Further within, Tatsuya could also see a facility that resembled the testing grounds similar to the one in the Four Leaves Technology lab.
To their right was a massive gym, complete with numerous exercising machines of various types, as well as a training ground that could facilitate both physical and magical combat training.
"Wow… I'm… Speechless… I didn't know we have this kind of thing right below us…"
"M-Me too… Our house is like a base for a super secret organization…"
"These are truly amazing… Just from a glance, I can tell that this facility is filled with machines and devices of the latest technology…"
"..."
The four stood in awe as they looked back and forth between the lab and the gym in disbelief. Not only was its sheer size jaw breaking, the quality of it was similarly astounding.
"...Shall we look around more?"
Aika nodded excitedly as Miyuki turned to look at her brother.
"If it is fine with you… In truth, I'm also extremely curious what sort of technologies you have here in your home."
"Ahahaha… Of course. Maybe then you can teach me about it so it won't be a waste."
"Of course."
With Yuuji and Aika in the lead, they then walked down the hallway to where the entrances were. The entrance to both facilities were right opposite of each other, and both of them were steel doors with a fingerprint and an iris scanner.
"...Why is the entrance this high secure when the rest are made of glass?"
"Uhn… Couldn't they just break the glass and enter…?"
Tatsuya tapped the glass and inspected it for a moment using his elemental sight.
"These are not regular glasses… These are glass-clad polycarbonate, the strongest type of bullet resistant glass. Moreover, it is of the highest quality. It could stop even a high caliber bullet from sniper rifles."
"...Seriously?"
"Yes. Even with magic, it would be extremely difficult to penetrate through this protective glass."
Tatsuya turned to Yuuji and Aika, who were both staring at him with eyes wide and jaw dropped.
"This facility might even serve as a bunker while we are under attack from firearms."
"...Well, let's just hope we won't get into that situation."
Yuuji then placed his thumb onto the fingerprint scanner and leaned in to position his eyes in front of the iris scanner.
Then a moment later, the lock beeped and turned green, and the door slid open.
"Okay… Fortunately, it does open with my biometrics…"
"Ah! I want to try it too!"
Aika pushed everyone inside and went out before the steel door slid close.
Then a few moments later, there was a beep and the door slid open once again.
"It works~!"
"Well, both of us are the owner, so the group chat must've registered our biometrics to it…"
"Uhn~ It's so convenient~!"
"... Really convenient."
As Yuuji and Aika talked, Tatsuya had already begun walking in and looking around with Miyuki following closely by his side.
Now that he could see it closely, all the computers, machines, and devices around him were indeed cutting-edge technology, some of which even the FLT lab he frequented didn't own. For someone whose life revolved around such technologies, Tatsuya couldn't help but look around in amazement and wonder.
"This is amazing…"
"It really is… Even from my layman's perspective, I can tell that these are extremely advanced technologies."
"It is. They're comparable to the ones owned by highly confidential government research facilities…"
"Wow… Well, you are free to use it if you want to. Right, Aika?"
"Uhn~! Tatsuya, your eyes have been sparkling all this time, you know~? Fufu~"
Tatsuya's eyes widened as he looked at Yuuji and Aika, who were smiling at him.
"Really?"
"Of course. But in exchange, you must teach us the magic system in this world. After all, there's still things we don't understand. The only thing we know about magic in this world are only those related to our power, after all."
In terms of the practical usage of magic in combat, Yuuji and Aika had received extensive knowledge of it when they opened their supporting item package from the group chat.
However, in regards to the intricate magical system of this world and the usage of magic for something other than combat, such as Tatsuya's objective of creating a sustainable energy resource using magic without the need for magicians to be its literal parts, their knowledge only extends to what has been explained in the anime.
"...Of course. Thank you so much. Having such technologies at my disposal will be a tremendous help in my research."
"No problem."
"Hehe~"
Seeing her onii-sama having this much fun, Miyuki also couldn't help but feel happy for him. It has truly been such a long time since her onii-sama enjoyed his daily life the way he is now…
"Onii-sama… I'm glad…"
"Miyuki~ What are you doing? Let's go~ They're leaving us!"
"Ah, yes!"
--------------------------------X--------------------------------
After exploring the underground levels for a few hours, as Tatsuya quickly became absorbed in his exploration, the four had dinner cooked by Yuuji himself before separating into their respective rooms to get ready for the night.
Yuuji went to his room, Tatsuya to one of the guest suites, and Aika and Miyuki to the room Aika "owned" but never slept in.
Upon arriving, Miyuki looked around in amazement.
"Wow, it's so neat and clean. Aika-san, you must've spent a lot of time tidying up your room."
"N-No, i-it's not that much~ Hehehe…"
Aika laughed awkwardly and averted her gaze, feeling slightly ashamed.
T-The reason why it's so clean is because I've been sleeping in Yuuji's room all this time… If I slept here…
She recalled the room she lived in back in her world. While she wasn't an especially messy person, she wasn't a neat person either. There are mangas, light novels, and clothes sprawled everywhere in her room, and only her "cultured" stuff were neatly kept in a secret place that only she knew.
She didn't mean to lie to Miyuki, but after being complimented and regarded so highly by such a cute girl like her, Aika couldn't muster the courage to tell her…
"A-Alright! L-Let's go take a bath! You can borrow my pajamas for tonight!"
"Yes, thank you very much."
One after the other, the two took their baths and changed into their pajamas before heading to bed.
As they were laying down in the darkened room, Aika tapped Miyuki's arm with a soft grin on her face.
"Hey hey, Miyuki~ Let's have a girls' talk~"
"Girls' talk, is it…? I understand. What is it that you wish to talk about?"
"Hm~ I'm not sure… How about you? Do you have any questions for me?"
Miyuki thought for a moment as Aika looked at her in anticipation. This was her first time she had ever slept over with a friend and had girls' talk, so she wasn't sure what to talk about.
However, there was one thing she had been curious about ever since meeting them.
"Uhm, if I may ask. What is your relationship with Yuuji-san? You seemed quite close, but even onii-sama didn't know what your relationship was."
"Ah~ Well, that's because we haven't really got the chance to tell him. Yuuji and I started dating two days ago~ Specifically, the night when we first arrived in this world and met for the first time~"
"Eh?! R-Really?"
"Uhn~ Was it really that surprising? As you said, we were acting quite chummy with each other, so I don't think it's that surprising."
"I-I did expect the two of you to have feelings for each other, but I didn't expect you to already be dating! I've heard from onii-sama that you all met just around a week ago, so how could you become a couple so quickly?!"
"A-Ah… W-Well… in truth, I've been talking with Yuuji much more than the other guys and I've been slowly falling in love with him since we started talking."
Aika scratched her cheeks awkwardly as Miyuki stared at her, giving her full attention.
"When we talk over the group chat, I couldn't help but feel an indescribable closeness to him. It was as if I've known him much longer than we've actually known each other. He was nice, funny, gentle, honest, understanding, considerate, and I had a lot of fun talking with him. I feel extremely comfortable with him, even though I've never met him. It's the first time I've ever felt this way…"
Aika looked up towards the high ceiling and continued.
"And when we finally met for the first time, all those feelings became even clearer. I finally realize that I really do love him. So I approached him at the dead of night and confessed."
"E-Eh?! You confessed that quickly? And at the dead of night?!"
"A-Ahahaha~ I just couldn't hold it back anymore. And fortunately, he also felt the same way. He told me he couldn't believe how compatible we are and how comfortable he was with me even though we've never met. Hehehe~"
"A-And you started dating right then and there?"
"Uhn~ After all, I can't hold it back anymore~! He even said that he won't ever let go of me! How can I not after he said that~ Kyaaaah~"
Miyuki looked at Aika in bewilderment as she giggled.
While she was a lady from a prestigious family, Miyuki wasn't completely oblivious to the societal norm of the common people, including the norm regarding romantic relationships.
And in this day and age, to be dating someone they just knew about for a few days was unthinkable… At most, their relationship would be friends, or perhaps close friends.
C-Could this be the norm in their worlds…?
As she mused, Miyuki snapped out of her daze when she felt a tapping on her arm once again.
"Hey hey~ What about you, Miyuki~? How is it going with your beloved onii-sama~?"
"E-Eh?! W-What?!"
"Hehe~ There's no need to be that surprised~ We know about the future, so of course we know about your feelings for you onii-sama as well~"
"R-Really?! U-Uuuuuhh… WAIT! Does that mean o-o-onii-sama knows about it as well?!"
"Hm, I'm not sure… He never really talked about it, so I think he hadn't realized it as well…?"
"Hah… I see…"
Miyuki slumped down as she let out a heavy sigh…
On one side, she was glad that her feelings for him weren't revealed to him yet. But on the other, she felt a bit sad that he hadn't realized her feelings for him…
"You don't need to worry, Miyuki~ Tatsuya only has eyes for you! You're the most precious existence in his life! And I know he cares for you a ton! So you just need to keep on pushing! Keep on attacking until you break his nigh-impenetrable defenses!"
"B-But… I-I wouldn't want to bother onii-sama…"
"What are you saying~? There's no troubling anyone when it comes to love! Well, except if you go too far when it's one sided. But in this case, it's not! He cares and loves you so much, and it's obvious that you're always enamored by him! So you must keep doing your best!"
"I-I-Is it that obvious…?!"
"Hm~ Maybe it's because we know about the future that it seems obvious, but to others, you may just seem like a pair of especially close siblings."
"I-I see… Then, please keep it a secret for now, Aika-san. Onii-sama is… going through a lot, and I wouldn't want to add to his stress. I'm fine just supporting him with everything I have for now…"
"Miyuki…"
Knowing a bit of what these siblings went, and are going through, Aika couldn't help but feel her heartstrings being pulled as she stared at Miyuki's melancholic expression.
"Uhn… don't worry. I'll also support you in your endeavors! Just tell Yuuji or me if you need any help! We'll do our best!"
"T-Thank you very much."
"Hehehe~ Now then~ Let's hear why you looooooove your onii-sama so much~?"
"E-Eh?! N-No, it's fine, Aika-san…"
"Eeeeeh~? Don't be shy~ Now tell me~ I've told you mine, so it's just fair, right~?"
"N-Noooooo!"