Miyazawa Rin, female, fifteen years old, is a prospective high school student about to leave behind the childishness of middle school and enter high school.
She has no hobbies and is currently sulking because her parents won't allow her to skip a grade to see her older brother, but outside, she maintains the persona of a cool, icy princess!
"Rin-chan, we're leaving now. Thank you so much for the band! Be careful on the train ride home!"
"Bye-bye."
Waving goodbye to her friends with an unchanged expression, Miyazawa Rin felt no inner change and was even slightly troubled.
In a metropolis as prosperous as Tokyo, some people don't study hard and plan to drop out of high school to form a band and conquer the Tokyo Dome. It's truly worrying...
But it doesn't matter, she won't see them once she's in high school. She'll just treat it as letting them fend for themselves...
Her steps toward the train station stopped. She struggled for a moment before taking out her phone and making a call.
"Moshi moshi, yes! I'm Miyazawa Rin, a friend of your daughter. Could we meet somewhere?"
Half an hour later, at a cafe next to the train station...
"To summarize, your child may be under too much academic stress recently. As parents, please do your best to help her through this difficult time."
"We... didn't notice at all. I've been too busy with work!"
"No, husband! I failed to notice the change in her emotions. If I had known she was so isolated at school, when she came home..."
"Sigh..."
Looking at the worried couple in front of her, Miyazawa Rin frowned, sighed deeply, and stood up to leave, "I apologize, please do not reveal my existence, but the competition in the band world is too great. I truly can't bear to see a high school dropout girl get swallowed by the waves..."
"Yes! Thank you for telling us this!"
"Please work hard together with your child!"
Waving her hand to indicate that no deep bowing was necessary, Miyazawa Rin bowed expressionlessly and turned to walk out of the cafe.
She did something completely superfluous again today. It's already this late, she should hurry home...
"Excuse me, young lady, do you know how to get to this place?"
Just as she was about to lift her foot, she was called back by a voice behind her. Miyazawa Rin leaned toward the elderly woman and was startled to find that the Obāchan (grandma) hadn't even turned on her location service. How could she navigate to the place!
"This, you have to turn on the location service first, and then tap navigation to use it!"
"Location service? Navigation?"
"...I'll take you there. Walk this way."
Since it wasn't a very remote place, and seeing that explaining it would probably be harder than just taking the person there, Miyazawa Rin chose the latter with a headache.
Another half hour later...
"Hah... Hah... I'm so tired from walking. Obāchan can't even ride the train. That's absolutely unacceptable in Japan!"
She was almost at Game Over status from exhaustion. Being asked out by a friend in the morning to guest as a guitarist, then trying to save a lost girl who was trying to drop out of school, and finally having to take an Obāchan home.
Miyazawa Rin felt like a top, spinning crazily since the moment she opened her eyes.
She was clearly not supposed to be the energetic, sunny girl type who goes shopping and eats parfaits with friends during the holidays and always has endless energy!
But thankfully, everything is over. She'll secretly watch a couple of her older brother's "fawning" videos at home to cheer up!
That's right, by the way, despite her young age, the mature Rin realized the concept and expression of oni-kon (brother complex) early on, and she is undoubtedly a not-too-twisted oni-kon!
The specific symptom is that she is very happy as long as she can call him Onii-chan, and the fatigue immediately vanishes when she sees her Onii-chan's videos!
Her only regret is that her attempt to use her allowance to bribe Miyazawa Yuu to record ASMR for her failed back then; otherwise, her sleep quality would definitely be much better.
"I'm home!"
"Welcome home, Rin-chan. How was the band practice?"
"Everyone is very nice, but the technical skills are unsatisfactory. I might have enjoyed it more if they weren't aiming to be professionals."
"Is that so~"
Scooping miso soup onto a dish, Yuno Miyazawa turned her head to look at her younger daughter with a seemingly dangerous squinted-eye smile.
"So you had fun~ That's good."
"Mom, cooking with your eyes squinted is dangerous. Also, did big brother say when he's coming back?"
"Yuu? Probably during the winter break, since he already came back once..."
Disappointment! Even if he came back once, couldn't he put a little more thought into his little sister!
Miyazawa Rin's forcibly maintained icy expression almost cracked, but seeing her mother's face full of "watching a good joke" gossip, she forcefully pressed her puffed-up cheeks back down.
"I-is that so... I was just asking, it doesn't matter!"
"Yes, yes, yes, Rin-chan was just asking~"
With the food on the table, Yuno Miyazawa ran her hand through her daughter's hair twice and asked: "Do you want to go see him? Izu isn't far. You can have him take you diving when you get there?"
"No need, it'll look like I'm chasing after him!"
She ate her rice vigorously. Miyazawa Rin was very firm with her words, but her body was so honest that she involuntarily ate two extra bowls of rice before throwing herself back into her room.
Speaking of which, her older brother has a girlfriend recently, so the time she can spend with him will be even less!
Fortunately, silly young boys and girls are very innocent, and slow progress in romance is natural.
It's only been half a month since Onii-chan confessed. Even though the three of them live together, she doubted he would pull any stunts.
"Besides..."
Her gaze shifted to her constantly lit computer. The fatigue in her body and the full feeling in her stomach quickly brought on sleepiness, and Miyazawa Rin's eyelids unconsciously began to flutter.
"He hasn't even stepped into his girlfriend's room yet. Onii-chan is such a failure of a boyfriend. Are they only going to get married after university..."
...
"Buzz—! Buzz—!"
At midnight, Miyazawa Rin was suddenly woken by the alarm sound. When she raised her bewildered small face, she was completely ungraceful, with drool even stringing down!
The truth proves that even an Ice Princess goddess will drool if she sleeps in the wrong position, but none of that is the point!
Still groggy, Miyazawa Rin immediately scrambled out of bed and rushed to the computer. The dazzling light from the screen illuminated her entire face, giving it a strong sense of three-dimensionality!
"So late, why is Onii-chan going to Nanaka-san's room? Is it a night raid..."
Double-clicking the software to wake the camera, the invisible bridge between Izu, hundreds of miles away, and Tokyo was instantly erected, broadcasting the situation on the other side.
"This dress has to be pulled up from the bottom... Eek! If it tears, you'll have to buy a new one!"
"Buy! Buy a few more and save them to tear slowly!"
"...Hurry up~"
"..."
Her small mouth slightly agape, Miyazawa Rin froze in place. Looking at the scene in front of her, the hand holding the mouse and her pupils both began to tremble violently.
Although the camera angle was quite high, only showing her older brother's back, there was no doubt that the scene on the other side of the video was probably the world of adults!
"H-how can this be? It's only been a little over half a month..."
The corner of her mouth twitched into a broken smile. Veins bulged on Miyazawa Rin's forehead. It took her uncontrollable hand a long time to move to the 'X' button to turn off the surveillance screen.
She had been performing good deeds, and this was her reward—to be forcibly exposed to this kind of knowledge? Heaven truly has no eyes!
[Rin: My brother scored a home run...]
[Shiori: Ahh~ The oni-kon is back. It's definitely an unfounded panic again, right?]
[Rin: The rabbit made from the design you gave me saw it. It absolutely cannot be wrong!]
[Shiori: That is indeed terrifying. So, what are you going to do?]
[Rin: Surprise attack!]
Throwing her phone onto the bed, Miyazawa Rin packed her luggage with a terrifying aura. The black and white in her unfocused eyes constantly mingled, finally settling in the inverted position.
Nanaka-san is a good person, so the philandering Onii-chan should just be killed by Rin herself!
...
Meanwhile, in an old mountain inn, the girl in the kimono also sighed deeply, feeling a headache.
Not only was her online friend's Onii-chan secretly messing around everywhere, but he also blatantly violated the rules by scoring a home run, making his sister so angry that she was setting off to personally kill her brother before she could even finish her sentence. And wasn't she in a similar situation herself!
Sliding the mouse and clicking on the hidden folder, Shiori Kitahara looked at the videos saved across several memory sticks, her eyes looking at them like garbage.
This scumbag brother not only illegally gathered people but also drank naked. It looks like he got too lax and lost discipline after being away from home!
Mhm! It's time to use some tactics to trick the bastard who ran away from home back and force him to inherit the family inn!
Crossing her legs, a very intense, sly smile blossomed on her face. Shiori Kitahara pulled out a letter she had prepared long ago and carefully pondered the wording.
[Salutations, to my dear older brother, I hope this finds you as the fresh new leaves sprout...]
[Attached to this letter are two small dolls. If possible, please place them in the shop~!]
Prying open the back of the rabbit doll and stuffing two ultra-high-capacity batteries inside, she sent the package out via expedited delivery that very night...