I really don't want to have a girlfriend.

With a sigh that left no clear meaning, Kasugano Sora closed the door and quietly went downstairs.

Her little nose twitched halfway through; the rich aroma wafting from the kitchen was so strong she could smell it even from the stairwell.

—How awful!

She always cooks such delicious food that people can't help but finish it all. If she ever gains weight, it will definitely be You's fault!

But since I'll be taking care of her for the rest of her life, it shouldn't matter if she's a little chubby, right?

Is this what they call "happy weight gain"?

"Meow~"

While she was lost in thought, the gray-spotted kitten came over and rubbed its cheek against her foot.

Kasugano Sora crouched down and stroked its head, her tone and expression unconsciously softening:

"Snowy, have you eaten?"

Ever since Yukino was picked up by his brother from the street corner, the little cat has been keeping Kasugano Sora company while he goes to school and works, alleviating his loneliness considerably.

They ate together, watched anime together, took naps together, and even went to the brother's room together...

Well, we didn't do that together; leaving cat hair or paw prints would be troublesome.

In short, just like a real family member, for Kasugano Sora, besides her older brother, the second most important thing in this world is probably this gray-spotted kitten in front of her.

After petting the cat's head, Qiong walked into the living room and, without any hesitation, opened the food bag and scooped a large spoonful into the bowl.

Then squat down, resting your hands on your knees to support your cheeks.

She watched Xue Nong quickly munching on the feed and smiled with satisfaction: "Eat more, let's get fat together!"

"Meow~"

The cats had already started eating breakfast. Kasugano Sora placed the rabbit plushie on the seat and turned to walk towards the kitchen.

Although she didn't deliberately lighten her steps, she was as light and agile as a cat, and still managed to enter the kitchen quietly without being noticed by the other person inside.

He seemed too focused on what was in front of him to notice his approach as usual, nor did he react to the gaze fixed on his back.

Kasugano Sora walked around behind him to the side and saw the two trays on the kitchen counter.

Today they had a Western-style breakfast, including Eggs Benedict and a Japanese-style salad, which looked and smelled delicious—just the right amount for the two of them.

If that's the case, why isn't he taking the dishes out? What is he doing now?

A bento box? But tomorrow isn't Monday yet.

"What on earth is this guy doing...?"

Feeling very dissatisfied at being ignored, Kasugano Sora frowned and muttered to herself, then leaned her head forward a little more until she could see what he was fiddling with.

It's my own mug, filled with the milk I drink every morning.

And now...

He was holding a suspicious little crystal bottle, a strange smile playing on his lips, and carefully dripping a single drop of a suspicious pure white liquid into it.

The substance quickly disappeared into the milk, vanishing without a trace like evidence that had been obliterated.

Kasugano Qiong: "..."

Overwhelmed by the shock, the silver-haired girl with pigtails stared wide-eyed, frozen in place as if petrified.

Meanwhile, Yuu Tenkuji put away the crystal bottle, gently shaking the milk while muttering to herself:

"Hopefully, this will be helpful to Qiong."

He had barely finished speaking when he turned around and saw Kasugano Sora looking completely incredulous.

Yuu Tenkuji: "..."

Kasugano Qiong: "..."

A silent and awkward atmosphere descended upon the kitchen.

The deathly silence seemed to gain weight, pressing down on the two people staring at each other, and the air became cold as if it were about to freeze.

Finally, it was Kasugano Sora who spoke first.

"I...I didn't see anything...you continue."

She whirled around, her silver hair swaying, revealing a rosy flush that ran from her ears to her cheeks: "Also, this is just my personal opinion... isn't one drop too little? It feels like it's practically nothing, not serious enough at all."

"Huh???" Tenkuji Yu reacted instantly, extending his hand towards her, "Sora, my sister, it's not what you think!"

"If you like this way of playing, I don't mind."

Seemingly having no intention of listening to his explanation, she muttered discontentedly as she walked nonchalantly out of the kitchen: "But I never expected you to have such a strange interest... I thought only cowards would like to do this."

"So it's a misunderstanding! I did put something in your milk, but it wasn't anything suspicious!" Yuu Tenkuji quickly raised her voice, stopping her from imagining a terrible scenario. "Do you think I would give you sleeping milk or computer parts? I'd be the first to regret it! You should know what kind of person I am!"

Although he had collected similar films in his previous life, after being reborn and meeting Kasugano Sora, he completely shut down this genre...

His younger sister was the most important person to him, and he never forgot that.

Moreover, if he really wanted to do something, would Tenkuji Yu need to use external tools?

It's not enough to just rely on your looks?

"So, what's inside is normal?"

Snapping out of her reverie of shyness, surprise, and slight delight, Kasugano Sora, who trusted him more than anyone else, stopped and turned back to look at the crystal bottle with a puzzled expression. "Is it saccharin or milk powder? Why is it specially packaged in this bottle?"

"...Well, I'll be honest."

After asking the system in my mind and receiving an affirmative answer.

For once, Yuu Tenkuji became serious, handed over the crystal bottle, and said earnestly to Sora Kasugano:

"I'll lay it all out here. This bottle is an 'otherworldly elixir' that I obtained through a transaction during a certain fortuitous encounter! It's definitely not something suspicious. I've already used it myself beforehand, so you can drink it without worry. I've got you covered!"

Kasugano Qiong: "..."

"With you saying that, how could I possibly feel at ease!"

What should I do if my brother's brain is damaged?

Waiting online, very anxious.

Chapter Sixty-Seven: Critically Ill, Come Quickly

"It doesn't have any particular flavor."

Kasugano Sora put down her cup, pursed her lips, and commented, "It's just ordinary milk. Is there really nothing strange in it?"

"It may be strange, but it's definitely a good thing. Well, just think of it as taking a tonic. You should be able to see more clearly what its effects are when you see the doctor next time."

At the dining table, Yuu Tenkuji ate breakfast while calmly talking to her younger sister.

Picking up a piece of the sweet and sour salad, making a crisp chewing sound, he suddenly asked, as if remembering something, "By the way, when are you going to the hospital next? I remember you haven't had your follow-up appointment in two months..."

"There's nothing wrong with my body, why go to the hospital?" Kasugano Sora said with a hint of resistance as she chewed on her Benedict egg.

Yuu Tenkuji smiled helplessly: "That's what they say, but it's an undeniable fact that you're frail and sickly. It's worrying to have you go back for a check-up regularly to monitor your health."

"It would be better if You could just stay home and keep me company. You'd be the first to know if I have any problems, so I can relax, right?" She offered this suggestion, but her tone betrayed her dissatisfaction and complaint.

"I'll go if You come with me, to see a doctor or something."

With her cherry-red lips open, Kasugano Sora stuffed the remaining Eggs Benedict into her mouth, making a decision in a muffled voice.

Yuu Tenkuji naturally had no chance to refuse: "Then I'll make an appointment for you online first, and then we can ask for leave and go to the hospital together."

After all, the clinics are closed on holidays, and even if I wanted to go now, there wouldn't be a doctor to see me... I could pay some money, but there's no need to go through all this trouble.

Let the effects of the 'Life Elixir' continue to develop for a while, then give Qiong a full physical examination to see if this drop of elixir is really as miraculous as the system says.

If everything goes smoothly, it will be time for the biggest weight on his heart to be lifted.

—As long as Qiong can be as healthy as an ordinary person, from now on I will respect Miss System very much and I will not use the word "dog" before calling her!

As Yuu Tenkuji made this solemn vow in her heart, she thought that the system would surely be very pleased with her sincerity.

system:"?"

"Then it's a date." Kasugano Sora said casually with a slight smile, "After seeing the doctor, let's go somewhere else to have some fun... We should still have time anyway."

Tenkuji Yu looked at her with some surprise, but couldn't help but laugh.

"A crowded place?"

"Absolutely not!"

"Go hiking or swimming..."

"Why not stay home and play on the Switch!"

As she forcefully denied it, a smile spread across her fair and delicate face, blushing with joy like a newly blossoming peach blossom.

Kasugano Sora understood that he had deliberately brought it up to tease her because he knew she disliked those places and sports... She didn't dislike these occasional mischievous places.

"Then let's see where we can go for a stroll nearby when we leave the hospital." Getting serious, Yuu Tenkuji concluded, "There's not enough time now, but we can go to places farther than the universe during winter break... Anyway, our family is rich now, we can go wherever we want."

"Let's forget about Antarctica. I don't want to go abroad either. I can just travel around Japan." Kasugano Sora wiped her mouth and said casually, "For winter break, I think a hot spring trip to Hakone (just the two of us) would be nice."

The small print in parentheses is a heartfelt message that even Tenkuji Yu's exceptional hearing cannot hear.

“Okay, it’s settled then.” He said decisively, “Let’s go to a hot spring together during winter break.”

"Hmm." The silver-haired girl nodded calmly, her face half-covered by a napkin.

—Yay!

Where he couldn't see, Kasugano Sora clenched her fists tightly, her cheeks slightly flushed, striking a small victory pose.

Soaking in hot springs wasn't the main point; this was the first time the two of them had traveled together like that since their parents had passed away...

One cannot dwell on the sorrow of the past forever, and Kasugano Sora understood this better than anyone else—that's what Tenkuji Yu told her, and in the days that followed, he helped her get out of the pain of losing her parents and cheer her up through his actions and companionship.

Therefore, when it's time to break free from the old ways and move towards a new future with closer relationships, Kasugano Sora will not hesitate.

Perhaps there would be some reservations at home, and you could clearly sense that he wouldn't dare to act because he's still young... But what about outside? When family members stay at a hot spring inn, they can't possibly have separate rooms, right? It's quite reasonable for them to accidentally sleep together, isn't it?

If she doesn't seize this opportunity to launch an attack as soon as possible, Yu might be snatched away by those bad women, scheming bitches, and big-breasted women outside—for some time now, this sense of crisis has been growing in Kasugano Sora's heart, making her more anxious and insecure than ever before.