My beautiful sister-in-law who is only attached to me, and my childhood friend who just made her high school debut, barged into my house?

Erika’s cheeks gradually relaxed, with newfound energy, she patted Shota on the back.

The two of them climbed up the creaking stairs to a room on the second floor.

“This place is…”

“It used to be a toy room.”

“I thought we’d be living in the same room like before.”

“T-there would have problems if we did wouldn’t we!?”

“Fufu.”

Erika laughed as Shota pricked his lips as if to beg her to stop teasing him as his heart continued thumping at the thought.

“Damn…. I placed the larger items like desks and beds at random, but is this okay? If you ask me, I’ll move it now.”

“Mm, It’s fine.”

“I see. The other cardboard packages that arrived yesterday are still untouched, so I’ll help you unpack them.”

“Thank you.”

Saying that, Shota returned to his room, took out a penknife, and proceeded to cut open the cardboard boxes.

The items inside such as pouches and hand mirrors, as well as personal items like mats and cushions with cute patterns really made him feel the difference between their sense of style.

When he saw the unfamiliar bottles and sticks, he realized they were cosmetics, and unintentionally stopped unpacking to glance at Erika.

‘Make-up, etc…’

She had translucent white skin, long curly eyelashes, and plump red lips. She also had a cute and beautiful face that leaves a little childishness.

Indeed, such items may be necessary for her good looks. While contemplating about it, he once again realised that Erika is a female, making his chest start to feel strange.

“Brother?”

“No, nothing.”

Evidently, I had been staring at her quite intently.

When Erika, who noticed my gaze, tilted her head, I averted her eyes, aware of my squirming heart.

As Erika took care of the unpacking with a cool face in a nonchalant manner, Shota, trying not to let her know how he was feeling, tried his best to remain calm as he unpacked the boxes, muttering inwardly, “CALM DOWN, BE NORMAL!”

But just when he opened a certain cardboard box, he let out a weird noise and froze.

“Hmm?”

“Uh, no, I mean, this is…..”

Shota quickly closed the cardboard box.

As Erika snatched it out of his hands she opened it up and help up what was within.

“Ah, underwear.”

“I understand, so please don’t spread it in front of me.”

“Embarrassed?”

“Of course I am!”

“Even though we are siblings?”

“You know, even siblings don’t do that.”

“Huh?”

While Shota turned away, Erika had a troubled expression on her face for a bit before it slowly morphed into one of mischief.

“We used to take baths together.”

“Mmm, those were the good old days!”

“Do you want to go in with me today?”

“Yeah!”

“You’re funny.”

“…Fuck you.”

Erika gleefully shook her shoulders in amusement.

It was difficult for me to gauge the distance with my sister.

However, looking at Erika’s smile, even though my heart was pounding at the slightest thing, I probably hadn’t reacted weirdly so far.

In the end, I left the clothes to Erika, and quickly unpacked the rest of the things.

The work went smoothly and was finished much faster than expected.

Shota looked around Erika’s completed room and couldn’t help but notice.

“I see you don’t have a lot of luggage.”

The only items that stood out were the desk, bed, bookshelves, and open shelves that doubled as storage for small items.

As I unpacked, I realized that compared to my room, there weren’t many personal belongings, and even though it had the same floor plan, it felt much more spacious.

It was a bit drab, if you ask me. It didn’t look like a girl’s room of someone of her age at all.

“… Well, I move around alot.”

“Is that so? That’s right, Dad used to travel all over the country for work, didn’t he?”

“That’s why I try to keep what I have to a minimum.”

“But it won’t be like that from now on, will it?”

“Oh!”

“…Erika?”

Erika’s eyes widened as they trembled at the revelation from his casually spilled words. Shota looked at Erika, wondering if he had said something strange.

The next moment, she returned a joyful face that reminded him of the past.

“From now on we’ll be together living together.”

“…!!!”

It was a surprise attack.

The girl in front of me, whom I thought might not actually be my younger sister, is indeed Erika.

I’m not sure if my heart is palpitating so much from agitation or something else but the one thing I am sure of is that I would like to see more of this smile.

“I haven’t yet stocked up on necessities like shampoo, toothbrushes, and tableware. The sun is still high, so why don’t we go buy some?”

“Sure, let’s go.”