Hugging the World's Most Beautiful Younger Sister While Sleeping Somehow Turned Her into a Yandere - 08 - A Promise to Sleep Together Every Day

“Ehehe. The same model as Nii-san.” 

Upon returning home, Runa, without changing out of her school uniform, had been looking at her smartphone in the living room. After completing the transfer of messaging apps and such, she isn’t actively using it but seemed to be simply gazing at it for some reason. 

By the way, the smartphone cases they purchased together are matching, but differently colored notebook-style cases, with Aoi having white colored, and Runa having black colored. 

It seemed she was happy to have the same smartphone as her brother.

“Runa looking at her smartphone is beautiful too.”

Aoi, who changed from his school uniform to his usual roomwear jersey, sat on the sofa, admiring the beautiful Runa, who was simply looking at her smartphone. 

Since he was transfering Runa’s photos and voice recordings from the computer to the smartphone, Aoi didn’t have it on him. 

The smartphone they bought today has the largest capacity among those available, so even if the photos were transferred to the smartphone, there’s no worry about storage pressure causing sluggish performance. 

After trying out the new smartphone a little, its performance was several times better than the previous one. 

With this, he could add even more photos and voice recordings of Runa. Even without the smartphone on hand, Aoi found himself naturally grinning at the thought.

“Even inside home, tights look good huh.” 

“Hyah…”

Runa made a sweet sound as he ran his fingers up and down her thighs, which were clad in black tights.

Since the temperature was getting warmer, she had been wearing thinner tights since the beginning of Golden Week, so she must have reacted just by being touched.

“Nii-san, the way you touch is a little naughty.” 

Muu, and so she puffed her cheeks out, but she didn’t seem really upset. If it had been the Runa from earlier, she would have gotten angry and left for her room, but it looks like because she slept while being hugged, it unconsciously drew out her brother complex.

I already knew she has a brother complex from the fact that we used to go to school together holding hands, but after sleeping together, it must have increased her bracon level.

“Ah Haha, it’s Runa’s fault.”

“What is?”

“Runa was only looking at her smartphone, and not me.”

I understand you want to take a look at your brand-new smartphone, but pay attention to me a little too.

With this thought in mind, Aoi ended up touching Runa’s thigh.

“Really, Nii-san is a siscon through and through.” 

Runa, with a slightly relaxed expression, doesn’t seem as exasperated as usual. After all, it’s safe to assume that her bracon levels have increased.

“Oh right. Since I have a new phone, I wanna take a lot of pictures and record the voice of Runa.”

He found joy in anything related to Runa. Since he doesn’t have to worry about storage for a while, he planned to transfer the data saved on the computer after finishing recording.

“Mou… Even if you don’t record, I’ll wake you up from tomorrow, okay?”

Placing the smartphone on the table, Runa, with a blush on her cheeks, gazed up at him with upturned eyes. Just from being gazed like that made him feel weak, but now was not the time to be in that state.

“Runa waking me up? Seriously?”

Runa hasn’t been this forward before, so Aoi was surprised and slapped his own cheek with his left hand.

“It’s not a dream.”

The stinging pain on his cheek confirmed that it wasn’t not a dream.

“Are all siscons idiots?”

Even though her brother complex seemed to have increased, Runa could still be mean. However, since she didn’t give him a withering look, it seemed to have improved a bit.

“So, you’ll wake me up?”

“Yes. We’re going to sleep together anyway, and I don’t like hearing my voice from the smartphone.”

It seemed certain that they would sleep together, as Runa lightly pinched Aoi’s sleeve with her fingers while averting her gaze. 

It was as if a girlfriend who just started dating wanted to be spoiled but was too embarrassed… that’s how Runa looked like now.

“So cute.”

Blushing and sweetly leaning on him, Runa is adorable, and Aoi hugs her.

“Hey Nii-san… you’ve really gone full siscon, haven’t you?”

Despite throwing a bit of sarcasm, Runa’s mouth was slightly loose.