Inside a certain room, two sisters sat side by side on the floor, leaning against the bed.

"..."

"..."

One was Shiori, a female university student. The other was her younger sister, Chika, who was in high school.

"So, Chika... what was this important thing you wanted to talk about...?"

"Oh, yeah... well, you see..."

Shiori quietly asked Chika, who was sitting next to her. In response to that gentle voice, Chika’s eyes darted around, and she spoke with a restless air.

"Big sister... um, well, you see..."

"Yeah..."

Chika hesitated and wavered many times, unsure what to do. Shiori watched with a gentle smile, patiently waiting for her words.

"...Ahhh♡ Fu, uuuhhh... fuuuhhhhh..."

Seeing this, Chika turned her gaze forward for a moment, took a deep breath to compose herself, and then, with a determined look, turned back to Shiori.

"Oh, big sister...! ♡ I... I! I feel about my older sister... not as family. I really love you as a person...! ♡"

"C-Chika...?"

What Chika said were words of love. However, those words and feelings, directed at a blood relative like an older sister, were something that should never be said, something that should never be harbored.

Therefore, when Shiori heard that, she widened her eyes in surprise. Chika, who had just spoken, trembled and lowered her head as if to say, "I’ve really messed up."

"...Uh... I’m sorry, big sister. I know it must be difficult to hear something like this so suddenly. Yeah, I know... it’s wrong, isn’t it? We’re sisters after all... I know I shouldn’t be feeling this way... I’m sorry, big sister. Forget what I just said."

Did she think it hadn’t worked out from Shiori’s reaction? With tears welling up in her eyes, Chika spoke slowly and seriously, looking genuinely sad.

"W-Wait...! Chika...!"

"...?"

This couldn’t go on. Sensing this, Shiori grabbed Chika’s hand and raised her voice. When Chika looked at her with a puzzled expression, Shiori’s face flushed. She seemed embarrassed, but then quickly made up her mind and began to speak.

"I’m sorry, Chika. It came so suddenly, and I was really surprised by your confession... but, well, I like you too...♡ Not as a little sister, but... as a person...♡"

"Huh? R-Really? Big sister...? You’re not just being considerate of me or anything like that, are you...?"

Shiori said this with an embarrassed look. When Chika looked up at those words, her eyes filled with a mixture of anticipation and anxiety, Shiori’s face flushed again, and she began to speak shyly.

"It’s not like I’m being considerate or anything... I’ve always loved you, ever since long ago.

But... I’m the older sister, and you’re the younger sister. Because we’re blood relatives, I felt I couldn’t say these feelings, that I couldn’t tell them... I’ve kept my feelings of love hidden and endured them all this time.

So... Chika, to hear you say that you like me as a person...♡ Knowing that the feelings are mutual makes me so happy...♡"

"Oh, big sister...! ♡ Then, then...! ♡"

Chika smiled happily at Shiori’s words and confession and leaned closer to her.

"Yes...♡ That’s why... that’s why...♡"

"...Chika, we’re blood sisters, but... even so... would you... be my lover...?"

"Ah...! ♡ Yes... I look forward to being with you...! ♡ Big sister...! ♡"

Looking intently at Chika’s face up close, Chika nodded with a wide smile in response to Shiori’s confession.

"Big sister...♡"

"Chika...♡"

After exchanging words of confession, Shiori and Chika gazed at each other. The way they looked at each other was no longer the look of sisters simply looking at a sibling. It was a loving, passionate gaze directed at a beloved new partner.

Then the scene changed. When the scene shifted, Shiori and Chika were no longer leaning against the bed but sitting on the bed with their knees bent.

"Big sister...♡"

"Chika...♡"

Shiori and Chika gazed at each other with intense eyes. With a hint of embarrassment in their expressions, they slowly leaned closer.

"Mmm, mmm...♡"

"Mmm, mmm...♡"

They pressed their lips together and kissed.

"Mm, haa...♡"

"Mmm, haa...♡"

First, they lightly touched their lips together, then gently pulled apart. But they did not stop there. They gently and slowly reached out their hands, intertwined their fingers, and, gazing into each other’s eyes with passionate looks, leaned closer again and shared a second kiss.

"Mmm, mmm...♡ Mmm, mmm, mmm...♡"

"Mmm...♡ Mmm, mmm, mmm...♡"

Now they stuck out their tongues to each other, intertwining them and mixing their saliva together. A faint smacking sound echoed in the room. Their eyes became hazy and dreamy. There was a sense of transgression, perhaps even guilt, between the two sisters about sharing such a deep kiss. But more than that, their hearts were filled with happiness at being able to kiss the person whose feelings they shared.

"Mmm...♡ Mmm, haa...♡"

"Ahhh...♡ Ahhh...♡"

They slowly savored each other’s lips, mixing their saliva. When they gently parted, a bridge of saliva formed between them, sparkling in the light. As they swirled their tongues around the remaining saliva, they gazed at each other again with passionate eyes.

"Big sister...! ♡"

"Ah..."

Then, firmly, Chika pushed Shiori onto the bed.

"Big sister... is this okay?"

"Eh...♡"

With her face flushed red, Chika reached for Shiori’s clothes and asked softly. Shiori slowly nodded and relaxed her body. With her face still flushed, Chika began to undress Shiori.

"...Big sister’s body...♡"

"Ahhh...♡"

In no time, Shiori was down to her underwear. Her large breasts were encased in a blue lace bra. She had a tightly defined waistline, and her crotch was covered by blue lace panties matching the bra. Her long, well-shaped limbs and flawless, smooth, fair skin with a fine texture were on full display. Standing before her older sister’s exceptionally well-proportioned and beautiful body, Chika gazed at it intently, a dreamy expression on her face. In response, Shiori placed her hands on her chest and blushed shyly.

"Big sister... you’re beautiful...♡ So, so beautiful...♡"

"...Thank you, Chika♡"

With a dreamy expression still on her face, Chika’s thoughts about her sister spilled out. Shiori, looking embarrassed, thanked Chika in return, then gazed intently at her and slowly opened her mouth.

"Hey, Chika. It’s a little embarrassing for me to be the only one to take my clothes off, but...♡"

"Oh, I’m sorry...♡ I’ll... take mine off too..."

Shiori’s words came with a look of embarrassment and a hint of sulkiness, causing Chika to hastily begin undressing herself while still straddling Shiori.

"...So, now we match...♡"

As her clothes rustled off, Chika’s body was revealed in her underwear. Her enormous breasts, encased in a light pink bra, were incredibly impressive, overflowing with eroticism and beauty. Her large, sexy buttocks, encased in light pink panties, were incredibly erotic. Yet her waist was well-defined, she did not appear overweight, her skin was well-maintained and beautiful, and she had a well-proportioned figure that was both erotic and refined.

"...Hehe. Chika, you’re beautiful too...♡"

"Ah... thank you, big sister... ♡"

Shiori looked up at Chika’s body from below, a smile on her face, and spoke. Chika looked embarrassed by those words, but a happy smile spread across her face.

"...Big sister...♡ Mmm, mmm...♡"

"...Chika...♡ Mmm, mmm...♡"

Once they were both down to their underwear, Shiori and Chika gazed at each other with passionate eyes and kissed again.