

水面(みなも)にうつる星のひかり
静けさのなかで時がとまる
あなたと出逢った あの橋のうえ
ほたるのひかりが舞っていた
言えずにいた 胸の奥の
ときめきだけが つのってゆく
やさしい声に ふれた瞬間(とき)
涙がこぼれた
ほたるの夜に誓う この想い
永遠(とわ)を信じて あなたに届けたい
たとえ季節(とき)が 流れても
あの光を ふたりで 見つめていたい
風が運ぶ あなたのぬくもり
そっと寄り添う 言葉もなくて
まばたきさえも 惜しくなるほど
ただあなたが そこにいた
夢のように 儚いけど
この気持ちは ほんとうだから
見上げた空に こぼれた願い
夜空に咲くよ
ほたるの夜に誓う この想い
あなたの笑顔 守ってゆきたい
もしも涙が こぼれたら
そっとそばで その手を にぎるから
かなしみさえ やさしさに
変えてくれる そんな奇跡
夜を越えて 光になる
ふたりの未来を照らして
ほたるの夜に誓う この想い
一番近くで あなたを見つめたい
たとえ星が 消えた夜でも
ほたるの灯が ふたりをつなぐ
ほたるの夜に そっと誓う
変わらぬ想いを あなたに
- Lyricist
SMIRE
- Composer
SMIRE
- Producer
SMIRE
- Vocals
SMIRE

Listen to A Promise in the Night of Fireflies by SMIRE
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A Promise in the Night of Fireflies
SMIRE
SMIRE - "A Promise in the Night of Fireflies"
A gentle ballad born in the stillness of the night, where love glows quietly, like fireflies floating through darkness.
"A Promise in the Night of Fireflies" is a deeply emotional slow ballad that paints a cinematic love story beneath the summer night sky. With soft piano, flowing strings, and a tender vocal that carries both fragility and strength, this song captures the kind of emotion that doesn't need to shout to be felt. It only needs to whisper-and it lingers.
"I couldn't say the words, but my heart knew."
From the very first verse, we're drawn into a world suspended in time. A quiet river, a bridge, two people standing side by side. And above them, the silent dance of fireflies-each light a heartbeat, each glow a hidden feeling.
SMIRE's gentle yet expressive vocals bring to life the emotions we all know too well: the fear of speaking our true feelings, the pain of not knowing what comes next, and the deep wish for that one moment to last just a little longer.
"A vow spoken not out loud, but from the soul."
In the chorus, the words "I make a promise in the night of fireflies" hold a quiet power. It's not a dramatic declaration-it's a soft vow, whispered through the glow of love and time.
This is not a song about passion in the traditional sense. It's about the love that chooses to stay. The love that watches, waits, believes. The kind that doesn't beg to be noticed, but simply glows.
Sound that moves like memory.
With a soft piano opening and strings that slowly bloom into a cinematic crescendo, the arrangement is built like a memory: soft at first, then overwhelming in emotion. The verses speak like a secret, and the chorus opens like a heart long kept closed.
SMIRE's voice is a perfect vessel for this kind of storytelling. With breathy falsetto, subtle dynamic control, and an unwavering emotional line, she doesn't just sing the story-she becomes it.
Fireflies as a metaphor for love that endures.
Fireflies don't burn brightly like stars or blaze like fireworks. They shimmer quietly. They flicker, fade, return. They remind us that love, too, doesn't always arrive with fanfare. Sometimes, it glows most beautifully in silence.
This song takes that symbolism and turns it into something unforgettable.
Even when the stars disappear from the sky, even in the darkness, "the light of the fireflies will keep us connected."
Why this song will stay with you:
It expresses the love we all wish we had the courage to speak.
It captures emotion without excess, favoring stillness over spectacle.
It invites listeners to relive their own memories through its delicate imagery.
It feels timeless, like a story we've always known, yet are hearing for the first time.
Conclusion
"A Promise in the Night of Fireflies" is more than just a song-it's a feeling. A soft moment of vulnerability turned into music. A promise made not in words, but in the light between two hearts.
Listen to this track on a quiet night, and you might just remember something you forgot:
how love often glows brightest when it doesn't need to be seen.
SMIRE - A voice that turns memory into melody.
Let this song be your quiet vow, your firefly in the dark.
Artist Profile
SMIRE
Hello, I'm Sumire! My biggest wish is to bring smiles and happiness to people all around the world through my music. I truly believe that music has a special power it can warm hearts, uplift spirits, and even gently embrace someone during tough times. That is why I put my heart into every song, hoping that my music can brighten someone's day, even just a little. Every morning, I release a new song on TikTok. My goal is to create music that can be a small source of comfort or motivation in your daily life. The songs that receive the most love are carefully selected and released as full versions so that you can enjoy them even more. Nothing makes me happier than feeling connected to everyone through music. If my songs can make you think, "I will do my best today!" or simply bring a sense of peace and warmth, then my mission is accomplished. No matter what kind of day you are having, I hope my music can gently accompany you and bring comfort to your heart. I will keep working hard to spread joy and happiness through my music! I would love for you to listen and spend wonderful moments together with me. Thank you from the bottom of my heart for your love and support!
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