[Intro]
(Slow, steady beat. Clean electric guitar with a touch of reverb)
(A heartbeat-like bass pulse underlies the atmosphere)

[Verse 1]
(Vocal: [Whisper] Intimate, breathy, close to the mic)
真っ白なカーテンが光を透かす　柔らかな午後の病室
おばあちゃんは遠い目をして　私を「よしこ？」と呼ぶ
それはかつての同級生の名前　私を孫だと忘れてしまうほどの深い霧の中
Lost in the haze, searching for our connection.
本当は心配をかけたくなくて　ずっと黙っていたけれど
私は本当のことを零した　震える手でシーツを握りしめて
「おばあちゃん…おなかの赤ちゃん、心臓に病気があるんだって。私、不安だよ」

[Verse 2]
(Vocal: [Soft but Determined] Building emotional tension)
返ってこない言葉を待つ　重苦しい静寂の中で
おばあちゃんの指先が　私の不安を包むように微かに動いた
帰り際　背中越しに届いた　凛としたあの響き
「トモ。よかったねえ。おなかの赤ちゃん、よかったねえ」
霧が晴れるように　おばあちゃんが私を呼んだ
それは魂が　未来へ手渡した　最初の光

[Pre-Chorus]
(Vocal: [Atmospheric] Expanding horizons)
一ヶ月早く産声を上げた　あまりに小さな命
「大丈夫とは言えない」　残酷な宣告が響く廊下で
私はスマホを掲げ　一生懸命に生きる息子の声を
戦場のような場所で　必死に録音したんだ
It's the sound of a miracle, fighting for tomorrow.

[Chorus]
(Vocal: [Powerful but Restrained] Deep emotional resonance, no shouting)
「よかったねえ」という言葉が　高鳴る鼓動のリズムに溶ける
絶望を溶かしていく　揺るぎない愛の共鳴
どんな運命が待っていても　この命をかけて育てていくよ
おばあちゃんが名前を呼んでくれた　あの瞬間の手の温もりを
一生の宝物にして　光の射す方へ歩き出す
Baton of life, passed from your soul to his.

[Bridge]
(Vocal: [Deeply Emotional] From intimate whisper to powerful expansion)
おばあちゃんの病室へ　駆け込んだ最期の夜
耳元で再生した　録音されたばかりの赤ちゃんの産声
「聴こえる？おばあちゃん。生きてるよ、この子、頑張ってるよ」
掠れたその声を聴いて　おばあちゃんは優しく微笑んだ
息子の無事を確認したかのように　安らかに　深く眠りについた

[Verse 3]
(Vocal: [Nostalgic] Emotional restraint)
あれから四年の月日が流れ　眩しい太陽の下を走る影
病気だったなんて嘘みたいな　息子の元気な笑い声
おばあちゃん、あなたの「よかったね」が　この子を押し上げたんだね
あなたが託したバトンが　今、公園の風の中で光っている

[Final Chorus]
(Vocal: [Full expansion] Radiant joy and quiet strength)
「よかったねえ」という言葉が　息子の笑顔に重なり合う
暗闇を照らし続ける　たった一つの確かな答え
巡りゆく季節のリズムを信じて　私は明日へ歌い続ける
繋いだんだよ　おばあちゃん　あなたの守ったこの命を
四年後の眩しい未来へ　私たちは歩いていく

[Outro]
(Vocal: [Fading Whisper] Extremely intimate)
Arigato... obachan.
Tomo. Yokat-ta-nee...
(Sound of a child laughing in the distance)

[End]

ーーーEnglish translationーーー

[Intro]
(Slow, steady beat. Clean electric guitar with a touch of reverb)
(A heartbeat-like bass pulse underlies the atmosphere)

[Verse 1]
(Vocal: [Whisper] Intimate, breathy, close to the mic)
White curtains filtering the soft afternoon light in the ward
Grandma looks with distant eyes, calling me "Yoshiko?"
The name of an old schoolmate from long ago, lost in a deep fog
Where she even forgets I am her own granddaughter.
Lost in the haze, searching for our connection.
I didn't want to worry her, so I kept it all inside
But the truth spilled out as my trembling hands gripped the sheets
"Grandma... the baby in my belly, they say his heart is sick. I'm so scared."

[Verse 2]
(Vocal: [Soft but Determined] Building emotional tension)
Waiting for words that may never come, in a heavy silence
Grandma’s fingertips moved slightly, as if to wrap around my fear
As I turned to leave, her voice reached my back with a sudden clarity
"Tomo. I’m so glad. For the baby in your belly, I’m so glad."
Like the mist clearing away, she finally called my name
It was the first light, handed over from her soul to the future.

[Pre-Chorus]
(Vocal: [Atmospheric] Expanding horizons)
Born a month early, a life so incredibly small
"I can't say he'll be okay," the cruel sentence echoed in the hallway
I held up my phone, capturing the voice of my son fighting to live
In that place like a battlefield, I recorded his breath with all I had.
It's the sound of a miracle, fighting for tomorrow.

[Chorus]
(Vocal: [Powerful but Restrained] Deep emotional resonance, no shouting)
The words "I'm so glad" melt into the rhythm of my racing heart
An unwavering resonance of love, dissolving the despair
No matter what destiny awaits, I will raise him with all my life
The warmth of your hand from that moment you called my name—
I'll make it my lifelong treasure and walk toward where the light shines.
Baton of life, passed from your soul to his.

[Bridge]
(Vocal: [Deeply Emotional] From intimate whisper to powerful expansion)
The final night I rushed into Grandma’s hospital room
By her ear, I played the recording of the newborn baby’s first cry
"Can you hear it, Grandma? He’s alive, this boy is doing his best."
Hearing that raspy cry, Grandma gave a gentle smile
As if confirming his safety, she fell into a peaceful, deep sleep.

[Verse 3]
(Vocal: [Nostalgic] Emotional restraint)
Four years have passed since then, shadows running under the dazzling sun
My son’s energetic laughter, making the illness feel like a lie
Grandma, your "I'm so glad" was what pushed this child forward
The baton you entrusted is shining now, in the breeze of the park.

[Final Chorus]
(Vocal: [Full expansion] Radiant joy and quiet strength)
The words "I'm so glad" overlap with my son's smiling face
The only certain answer that continues to light up the darkness
Believing in the rhythm of the changing seasons, I’ll keep singing for tomorrow
I connected it, Grandma—this life that you protected
Toward a dazzling future four years away, we continue to walk.

[Outro]
(Vocal: [Fading Whisper] Extremely intimate)
Arigato... Grandma.
Tomo. Yokatta-nee...
(Sound of a child laughing in the distance)

[End]