Hugging the World's Most Beautiful Younger Sister While Sleeping Somehow Turned Her into a Yandere - 05 - Sleeping With My Little Sister

“Uuu~… Is it necessary for us to sleep together?”

It’s past 22:00, and Aoi is lying on the same bed as Runa. They’ve both finished taking a bath, and now it’s time to sleep. However, Runa’s cheeks are unusually red, perhaps because they are sharing the same bed.

“Because at home, you said you wouldn’t refuse my requests.”

Just to test if she’d agree to sleep together, Aoi made the request, and she bashfully consented.

Even though she said she wouldn’t refuse requests at home, under normal circumstances, Runa would have probably declined. However, considering she caused his sprain today, she likely doesn’t intend to refuse even unreasonable requests.

“Well, I did say that, but… aah~…”

Maybe due to embarrassment, Runa hasn’t been looking in his direction. She’s wearing a negligee with a black ribbon around the chest area, and when he hugs her tightly, he can feel her softness and warmth. The sensation that makes him want to feel it forever gives him an unprecedented sense of happiness.

Since they had become siblings in the upper grades of elementary school, they’ve never slept in the same bed like ordinary siblings. The overwhelming joy makes his expression… no, his entire face slacken.

“I can’t sleep without seeing Runa’s sleeping face.”

He has become unable to sleep without looking at Runa’s peaceful face. So, he sneaks in every night to watch her sleep. If she won’t refuse a request, it’s quicker to sleep together. Also, it’s a single-size bed, so they have to be close.

“It’s hard to sleep when you’re being hugged. Can’t you just touch lightly?”

“Aah~,” Runa let out an embarrassed voice.

“You can’t sleep without hugging when you share a bed. Don’t normal couples hug and sleep together?”

“Normally, even lovers don’t sleep while hugging, do they?

“I’ve never had a girlfriend, so I wouldn’t know.”

“I’ve never had a boyfriend, so I wouldn’t know either. But isn’t it hard to sleep while hugging?”

She seems to have gotten a bit used to it and finally looks at him. However, her cheeks are still flushed, and it seems like the embarrassment hasn’t faded.

“It’s incredible to be able to sleep with Runa. Difficulty sleeping is a minor problem.”

He hugged her even tighter and made Runa bury her face in his chest.
She did not expect Aoi to go this far, and her body temperature rose even higher due to embarrassment.

Buried in his chest, in an embarrassed voice, he could hear her making a “Uuu…..” sound. Even so, she doesn’t resist, probably because she felt happy in the midst of embarrassment.

“You can sleep better if you prioritize comfort.”

“If you prioritize comfort, you shouldn’t hug in the first place.”

“You’re getting stubborn?”

Even though he knows that hugging makes it hard to sleep, Aoi still wants to do it. If Runa explicitly says she doesn’t want to, he’ll obediently comply, but for now, she hasn’t said anything.

“Then let’s do this.”

Aoi got up from the bed and picked up the pen on the table.

“Runa, can you lift your hips?”

“Oh, yes.”

Wondering what he was up to, Runa obediently lifted her hips. Holding the pen with his left hand, Aoi approached and swiftly lifted the hem of her negligee up to just above her navel.

“N-Nii-san, what are you doing?”

Immediately trying to pull the hem back down, Runa was firmly held by Aoi and couldn’t put it back. Due to her albino condition, Runa had weaker muscles compared to other women, and even using his non-dominant hand, Aoi could easily restrain her.

“I was thinking of writing ‘Onii-chan’s Exclusive Hugging Pillow’ here. You won’t refuse my request, right?”

“W-Well, I did say that, but there are limits. Can I write ‘Sister’s Exclusive Hugging Pillow’ on you, Nii-san?”

“I’d be so happy I’d cry.”

You could tell tears were welling up just by imagining it. If ‘Sister’s Exclusive Hugging Pillow’ was written, they could sleep together every day, so he might actually want her to write it.

“So, Nii-san, is that the kind of person you are…”

Runa, looking bewildered, retreated her hand from the hem as if resigned. If she was prepared to have it written on herself, then maybe she was willing to do it.

“I thought about it, but can pens cause skin irritation?”

“I’ve never had anything written on me, so I wouldn’t know.”

Searching for the ingredients of the water-based pen on his smartphone, it seemed safe for ordinary people, but it might cause skin irritation for albino individuals. To ensure Runa’s skin wouldn’t suffer, Aoi decided to stop writing and lowered the hem of her negligee. Perhaps Aoi cares more about her skin than she does.

“I can’t write on Runa, so I’ll write it on myself. Come on.”

Lifting his own shirt, Aoi exposed his belly, wanting her to see it.

“Well, I don’t want to write, so please put away the pen.”

“Huh? Seriously?”

“I wonder why you’re so surprised…”

If she says she doesn’t want to write, he can’t force her, so Aoi puts down the pen and gets back into bed. Despite Runa’s delicate frame, he tightly hugs her soft body, not letting go.

“I think I can sleep even without seeing your sleeping face.”

The warm feeling of someone important is enough to make him feel like he can sleep as it is. However, wanting to feel more, Aoi entwines his legs with Runa’s, seeking her warmth. Perhaps because his legs are between her thighs, Runa, looking embarrassed, lets out a voice, “Aau~.”

“Goodnight.”

“Goodnight…” Believing that he could sleep happily tonight, Aoi closed his eyelids to sleep.