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My Sister's Friend: The Onii-san Who's Only Mine

🎙 Kaede Sawahata Cast
★★★★★4.8(255)
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  • Whispered phone call roleplay, day and night
  • Secret nighttime calls and holiday morning wake-ups
  • 'Little devil' heroine whose sweetness curdles into yandere obsession
  • Includes full-size jacket art (no title) and script file
YandereWhisperingPhone Call RoleplayMorning Wake-up CallObsessionPsychological HorrorRomanticTeasingYounger FriendFlirtatiousHigh School SettingSlice of Life
Circle
Utai Suzu
Voice actor
Kaede Sawahata
Release
2023-03-27
Series
病んだりシリーズ
Format
ボイス / ASMR
File format
MP3
File size
146.98MB
Age rating
全年齢

For listeners who enjoy a 'little devil' heroine whose sweetness slowly curls into yandere dread, delivered through intimate phone-call whispers.

She's your little sister's friend—a sweet, playful girl who calls you 'onii-san' with easy familiarity through games, phone calls, and morning wake-up calls. At first her affection looks like harmless teasing, but it slowly reveals an obsessive, unsettling edge. Part of the 'Yandari' series, this work traces the moment sweet romance tips into psychological horror.

"Onii-san, don't you think you look nothing at all like Saki-chan?" My little sister's friend, Rindou Yomogi, has recently started coming over to our house to play games with my sister, Saki. Rindou-san is a cute, cheerful girl with a smile that really suits her. But given the awkward distance of being "my sister's friend," I can't help treating her a bit formally, like a stranger. It seems she has a bit of a mischievous streak, and she seems to enjoy teasing me—her friend's older brother. One day, she suggests we exchange contact information. And so the days of sweet phone calls begin... or so I thought? —I didn't mind at all the affection and interest she so openly showed me; if anything, I started to think I might actually have a chance. But every now and then, something about her words and actions feels a little off. Is it respect? Love? Or maybe something else...? A little mischievous, but harmless and adorable—"my little sister's friend." The kind of girl who'd rarely become the heroine of a story, more of a background character, so to speak. But what if she... ended up possessed by an abnormal kind of love? Playing games together happily, enjoying a little secret phone call at night, a cute wake-up call on your days off. The more words you exchange, the clearer Rindou-san's feelings for you become. And at the same time... you gradually start to sense that she isn't quite "normal." You won't know which kind of thrill is making your heart pound—is the color inside her mind a pure, innocent pink, or a deep, blood-like crimson, or perhaps an endless darkness...? This is a sweet, horror-tinged voice drama for you to uncover the truth.

倫道ヨモギ (Rindou Yomogi)My sister's friend

A first-year high school girl. She's the best friend of your classmate sister, Saki, playing games together and staying connected on social media too. She always speaks to you in polite, formal language, but keeps a close, friendly distance and has an approachable personality. She's quite popular, having been confessed to by classmates many times, but she's never once given a positive answer. Her insight and initiative are remarkable, and every so often she shows glimpses of words and behavior that seem unlike those of a girl her age...

  1. 1Onii-san's House07:15
    "I don't think you're annoying at all, Onii-san, you know?"
  2. 2Let's Give Onii-san a Call10:38
    "That kind of thing, you know, it just... makes you conscious of it, doesn't it..."
  3. 3Sleepyhead Onii-san!10:13
    "...I got to hear your just-woken-up voice, Onii-san..."
  4. 4Hey, Onii-san09:08
    "Onii-san... Doesn't this kind of thing make your heart race?"
  5. 5I'm Sorry, Onii-san04:48
    "Onii-san... Thank goodness... you picked up..."
  6. 6One More Time, One More Time, One More Time20:07
    "(self-censored)"
Voice
澤幡かえで
Music
teruny
Illustration
竹やなぎ
Scenario
雲井砂
★★★★★A work that even a heavy user couldn't resist writing their first review for🌐 AI translated · JA

I'm a heavy user who's purchased over 400 works, and I'm basically not someone who writes reviews, but this was such an amazing work that it made even someone like me want to convey its wonderfulness. First of all, even though I'm about to write a review with spoilers, I want you to listen without seeing the spoilers first. The reason is, I want you to experience this work as your 100% pure self who knows nothing about the heroine. How you feel about this work completely changes between not knowing about the heroine and knowing about her. So, for your first listen, please listen in a state of knowing nothing. From here on, my personal impressions with spoilers. The first time I listened, it was shocking. It felt like being betrayed in a good way. Fans of yandere characters will feel a pleasant shiver. Heroines in yandere works are often one-sided, which is fine in itself, but I always felt something was slightly off when the push was too strong—I wanted to love the other person too, you know? But Yomogi-chan skillfully guides you and makes it into mutual love. Rather than one-sidedly pushing her love onto you, she's a yandere heroine with the charm of being able to properly consider the other person's feelings and hold herself back. For me, this felt like the optimal answer for what a yandere should be. Also, this work is one that's delicious more than twice with a single bite. As I mentioned at the start, how you feel about the work and the meaning of the lines completely change before and after you learn Yomogi-chan's true nature. If you listen carefully paying attention to things like how she laughs and how she delivers her lines, you'll be able to feel even more of the ups and downs of Yomogi-chan's hidden side, and enjoy the work even more. Going from a natural conversation with a close friend to suddenly realizing you've been dancing entirely on her palm the whole time gives you a completely different kind of impression. In any case, the setting, script, and acting were all things I have nothing but praise for—it was an amazing work. Sorry for the long review.

ウマのアイコン · 2023-03-30
★★★★★Skillful push and pull🌐 AI translated · JA

As stated in the work's overview as "a little devil," it's never one-sided affection—there's push and pull that keeps your heart racing. And if you listen all the way to the end, your brain gets melted. At the end, it looks as though she's revealed her true nature, but even then, you can't tell how much of it is acting and how much is genuine. It was really great to experience the pleasure of being manipulated by a bewitching younger woman.

中澤 · 2023-08-21
★★★★★Utaurin has taken another step forward. You can experience all kinds of shivers!🌐 AI translated · JA

This kind of full-on yandere is pretty rare among Utaurin's works, I think. Yomogi-chan feels like a modern-day kind of girl who teases her onii-san a bit, but it's not rude—it's more like friendly, easygoing fun, and she's a really nice girl. I'd love to be loved by a girl like this~ While listening, there are shivers from being teased and getting embarrassed, shivers of heart-fluttering cuteness, and shivers of fear. It's seriously shiver after shiver. The ending was genuinely scary...

昇天マン · 2023-03-29
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