Hugging the World's Most Beautiful Younger Sister While Sleeping Somehow Turned Her into a Yandere - 33 - Siscon Killer (Breaker)

“Nii-san, a very good morning to you.”

Waking up on a Sunday morning, Aoi found Runa smiling at him with her red eyes from the same bed. Being able to wake up to his beloved Runa recently filled him with happiness.

Previously, he used to wake up to Runa’s voice sounding from his smartphone and would look at her photos through the screen. 

However, the real Runa’s beauty far surpassed the technology of the smartphone’s voice and pictures.

“Good morning.”

“Good morning kiss. Mmm… chuu“

Upon exchanging greetings, Runa leaned in for a kiss. 

It wasn’t particularly intense since it was morning, but it seemed like Runa had become addicted to kissing. 

Not content with just touching lips, she even nibbled playfully.

As Aoi also enjoyed kissing, he couldn’t help but feel overwhelmed with happiness, and as expected, he felt his strength leaving him.

Anticipating this reaction, Runa smirked mischievously. It seemed like she was thinking she could keep kissing him endlessly.

“Since you had a nosebleed yesterday, you won’t have one today, right?”

Runa whispered in a sweet voice near his ear, saying, “That’s good, isn’t it?” as she blew a breath gently. 

Although he felt a slight chill run down his spine, it wasn’t an unpleasant feeling, perhaps because she was blowing breath at him.

He wanted to believe that she was just being mischievous rather than truly embracing her yandere side since she declared it.

“Even if you have a nosebleed, let’s manage it with the hemostatic agent from now on.”

It seems like Runa has no intention of holding back anymore now that she’s shown her yandere side.

She made him take it yesterday after he had a nosebleed, and she had also ordered a new supply online.

It cost around 6,000 yen for 300 tablets, so he might have to take hemostatic agents every day from now on.

“Ehehe. Nii-san~”

It seemed like she was satisfied with the morning kiss as now she was rubbing her cheek against his chest as if seeking affection.

Runa seemed to have forgotten about leaving Aoi alone ever since declaring herself a yandere, as she’s been sticking close to him ever since.

“Runa, can you give me a lap pillow?”

“Yes. If it’s Niisan’s request, I’ll do anything.”

Appearing content, Runa promptly agreed and rested Aoi’s head on her thigh, who seemed to be weakened.

Anything he asked for… perhaps limited to wholesome things. Still, from now on, she might be willing to accommodate some requests even at school.

Since he hasn’t been recording Runa’s voice on his phone lately and he’s curious about what she does during breaks, he decided to visit her class next time.

“How’s my lap pillow?”

“The best.”

Though he wanted to give a thumbs up, he lacked the strength to do so.

With the hem of her negligee rolled up, the sensation of her thigh directly transmitted to his head. If this wasn’t the best, what else could it be? He couldn’t help but wonder.

“Nii-san…”

With his left hand being held and his head being stroked with her right hand, Aoi felt a surge of happiness coursing through his entire body.

A lap pillow from his beloved little sister, holding hands, and being gently caressed on the head… There couldn’t be anything other than happiness.

If there were someone who didn’t feel happy even after being treated so lovingly by their loved one, Aoi couldn’t help but feel strong anger towards them in his heart.

“Runa is still the same old Siscon Breaker…”

His little sister, who was causing him to lose strength due to happiness almost every day, could only be described as a siscon breaker.

Since he couldn’t move his body because he had lost strength, he could only turn his gaze towards Runa.

“You’re saying incomprehensible things again, aren’t you?”

With a sigh mixed with bewilderment, she seemed somewhat pleased nonetheless.

“Such a brother is a ‘Brocon Breaker.'”

“What does ‘Brocon Breaker’ mean?”

It was the first time he had heard the term, so with a question mark floating in his mind, Aoi asked while Runa continued to stroke his head.

“It refers to a brother who is out to ‘kill’ his sister’s brother complex.”

Runa’s embarrassed expression as she said this was incredibly cute, and Aoi felt like hugging her tightly if he could muster the strength. 

Despite her Yandere declaration to do anything for him, it seemed that embarrassment wasn’t going away.

“I’m just directing my affection towards Runa.”

“That’s what makes me happy. I’ve been alone for so long, so having someone with me makes me happy.”

Feeling the strength in the hand he was holding, Aoi understood Runa’s feelings. 

Being albino and having no one around due to her appearance, Aoi was likely the first person outside of her blood-related family to have a proper interaction with her.

Since she said she fell in love at first sight and he treated her well, it must have meant a lot to Runa.

“Since becoming a family with you, Nii-san, I’ve been experiencing truly fulfilling days. So, this time, I’ll make you happy.”

“I’m already happy.”

“Even more so.”

“Any more and my body won’t be able to handle it.”

Even now, Aoi felt he was melting away, so if he were to receive any more happiness, his nosebleeds would never stop. 

While happiness was a good thing, he wished for the nosebleeds to stop. 

But, for Runa’s happiness, he figured he should endure a bit more nosebleeds.

“Truly, Nii-san is Nii-san.” 

With a joyful smile, Runa brought Aoi’s hand to her lips and kissed it. 

In that moment, as expected, the nosebleed he had been holding back erupted like a volcano.