REI’s solo song “In Your Heart,” released on February 23, 2026, as part of the REVIVE+ project, explores themes of deep affection, longing, and emotional connection. The lyrics likely revolve around the desire to be present in someone’s mind and heart, expressing a romantic or heartfelt message, possibly featuring English phrases like “I’m in your heart”.

Song Credits

  • Artist: Rei (IVE)
  • Album: REVIVE＋
  • Released: February 23, 2026
  • Length: 2:03
  • Label: Starship Entertainment
  • Lyrics: REI, Rick Bridges
  • Producer: Rick Bridges, steven, DEEVAN, REI, Rick Bridges, Nam Woo Kwon (Mastering), Eun Jin Yu (Assistant Mastering), Seung Ho Jang (Assistant Mastering)

Rei “In Your Heart” Performance

Rei “In Your Heart” Lyrics

Hangul

I do, I do 나른하게 눈을 감을 때
Achoo, achoo どきどき spark inside
꿈인지 몰라 just tell me how you feel
두근거려 막 cuz I’m already here

すでにもう I’m in your heart
In your heart-heart-heart
In your heart (In-in-in your)

すでにもう I’m in your heart
In your heart-heart-heart
In your heart (In-in-in your)

REI in your heart-heart heart-heart-heart
In your heart-heart heart-heart-heart
In your heart-heart heart-heart-heart
Uh, heart-heart heart-heart-heart

기분 メッチャ 핑크
キラ 거꾸로 V
아무래도 폭주를 멈추기엔
It’s too late
틱톡 look at me
그렇게 네가 나를 봐줄 때 yeah

You make me high
Up in the cloud
계속 웃어줄래
Forever star, we light the sky
Together we can rule the day

꿈인지 몰라 just tell me how u feel
두근거려 I’m already here

すでにもう I’m in your heart
In your heart-heart-heart
In your heart (In-in-in your)

すでにもう I’m in your heart
In your heart-heart-heart
In your heart (In-in-in your)

REI in your heart-heart heart-heart-heart
In your heart-heart heart-heart-heart
In your heart-heart heart-heart-heart
Uh, heart-heart heart-heart-heart

すでにもう I’m in your

Romanized

I do, I do nareunhage nuneul gameul ttae
Achoo, achoo dokidoki spark inside
Kkuminji molla just tell me how you feel
Dugeungeoryeo mak cuz I’m already here

Sudeni mō I’m in your heart
In your heart-heart-heart
In your heart (In-in-in your)

Sudeni mō I’m in your heart
In your heart-heart-heart
In your heart (In-in-in your)

REI in your heart-heart heart-heart-heart
In your heart-heart heart-heart-heart
In your heart-heart heart-heart-heart
Uh, heart-heart heart-heart-heart

Gibun metcha pingkeu
Kira geokkulo V
Amuraedo pokjureul meomchugien
It’s too late
Tiktok look at me
Geureoke nega nareul bwajul ttae yeah

You make me high
Up in the cloud
Gyesok useojullae
Forever star, we light the sky
Together we can rule the day

Kkuminji molla just tell me how u feel
Dugeungeoryeo I’m already here

Sudeni mō I’m in your heart
In your heart-heart-heart
In your heart (In-in-in your)

Sudeni mō I’m in your heart
In your heart-heart-heart
In your heart (In-in-in your)

REI in your heart-heart heart-heart-heart
In your heart-heart heart-heart-heart
In your heart-heart heart-heart-heart
Uh, heart-heart heart-heart-heart

Sudeni mō I’m in your

Translation

I do, I do, when I drowsily close my eyes
Ah-choo, ah-choo, doki-doki spark inside
I don’t know if it’s a dream, just tell me how you feel
My heart races wildly ’cause I’m already here

Already, I’m in your heart
In your heart-heart-heart
In your heart
(In-in-in your)
Already, I’m in your heart
In your heart-heart-heart
In your heart
(In-in-in your)

REI in your heart-heart-heart-heart-heart-heart-heart-heart
In your heart-heart-heart-heart-heart-heart-heart-heart
In your hеart-heart-heart-heart-hеart-heart-heart-heart
Uh, heart-heart-heart-heart

Feeling super pink, kira, upside down V
No matter what, to stop the rampage, it’s too late
Tick-tock, look at me
When you look at me like that, yeah
You make me high up in the cloud, will you keep smiling for me
Forever star, we light the sky, together we can rule the day
I don’t know if it’s a dream, just tell me how you feel (Yeah)
My heart races, I’m already here

Already, I’m in your heart
In your heart-heart-heart
In your heart
(In-in-in your)
Already, I’m in your heart
In your heart-heart-heart
In your heart
(In-in-in your)

REI in your heart-heart-heart-heart-heart-heart-heart-heart
In your heart-heart-heart-heart-heart-heart-heart-heart
In your heart-heart-heart-heart-heart-heart-heart-heart
Uh, heart-heart-heart-heart

REI in your heart (Heart-heart-heart-heart-heart-heart-heart-heart)
In your heart (Heart-heart-heart-heart-heart-heart-heart-heart)
You and I (Heart-heart-heart-heart-heart-heart-heart-heart)
Feeling loved, oh, yeah (Heart-heart-heart-heart-heart-heart-heart-heart)
In your heart
In your heart
You and I
Feeling loved
Already, I’m in your

Rei “In Your Heart” Meaning

Rei’s solo track “In Your Heart,” released as part of IVE’s REVIVE+ project in 2026, centers on themes of affection, longing, and emotional connection. The lyrics express the desire to remain deeply present in someone’s thoughts and feelings, portraying love as a quiet but lasting bond that continues to exist within the heart.

Rather than focusing on dramatic emotions, the song conveys a softer and more intimate perspective on love. Through gentle lyrics and heartfelt delivery, Rei captures the feeling of wanting to stay close to someone emotionally, even when distance or time separates them. Phrases like “I’m in your heart” emphasize the idea that genuine feelings can remain strong and meaningful regardless of circumstances.

As a solo track, “In Your Heart” highlights Rei’s warm tone and expressive style, presenting a more personal and emotional side of her artistry. The song adds a tender and reflective layer to the REVIVE+ album, complementing its broader themes of identity, connection, and growth.