An idol sings a mutual-love song. A collection of happy love songs.
Among the songs sung by idols, there are so many love songs! From bittersweet ballads to upbeat tracks that capture the flutter of romance, there’s a wide variety.
In this article, we’ll be introducing songs that celebrate mutual love from among those many romance tracks.
Each one tells the story of two people who care for each other, so you’re sure to find heartwarming songs that make you feel warm inside.
Be sure to listen while thinking of someone special to you.
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Mutual Love Songs Sung by Idols: A Collection of Happy Love Songs (41–50)
Too late caution＝LOVE
The title track of =LOVE’s 3rd single, depicting a forbidden romance set at an all-girls school.
Released in May 2018, it reached No.
3 on the Oricon Weekly Singles Chart.
Producer Rino Sashihara penned the lyrics, weaving tense, gripping words to portray a girl’s turmoil as she wavers between society’s “rightness” and an uncontrollable love.
Why not give it a listen when you’re harboring feelings you can’t tell anyone about?
Love letterHey! Say! JUMP
This is a ballad that captures the frustration of being unable to take that first step in love, alongside the pure feelings you hold for someone.
Its structure—passing the vocals along over delicate piano and strings—seems to carefully trace the subtle shifts of a wavering heart.
Many listeners will likely feel a tightening in their chest at the image of someone entrusting their overflowing feelings to a letter, lacking the courage to speak directly.
It’s the coupling track included on the standard edition of the single “encore,” released in May 2025.
While the title track drew attention as a TV drama theme, this song quietly won fans over as a hidden gem.
It’s a piece that stays close on nights when you want to keep thinking of someone in silence.
For anyone experiencing a one-sided love and finding it hard to be honest, this is a work you should definitely hear.
Confession Heart RateSKE48
SKE48, based in Sakae at the heart of Nagoya, continue to captivate audiences with their energetic performances.
This work, the group’s 33rd single title track, is a fast-paced dance number that portrays the pounding heartbeat of a fateful first encounter.
Even before knowing anything about the other person, you’re drawn to them beyond reason… That uncontrollable feeling of falling in love is expressed through choreography inspired by a racing pulse.
Released in October 2024, the song shines with Haruka Kumazaki at its center—her long-awaited first time in the spotlight nearly 10 years after joining the group.
It’s the perfect track for anyone ready to take a step toward confessing their feelings.
More than lovers, less than love (TV Size)＝LOVE
A song by =LOVE produced by Rino Sashihara.
Chosen as the opening theme for a TV anime, the track is included on their 18th single slated for release in February 2025.
This song, which depicts complex feelings of love, features a pop, catchy melody.
Its lyrics align with the anime’s world, expressing the protagonists’ delicate relationships.
Members Kiara Saito, Hitomi Takamatsu, and Iori Noguchi are also set to appear as voice actors in the anime.
It’s a recommended track for anyone who’s experiencing the frustrations of love!
Only bots / Nothing but botsfantomu shiitaa
The eighth digital single, released in November 2025, is a Showa disco-style dance tune from Phantom Theta, a retro-horror-themed idol group produced by Ado.
It portrays the anxiety of falling in love with an ideal partner while not knowing whether they’re genuine or a fake, alongside a heartfelt yearning to be loved by someone anyway.
Set to a retro-pop sound, the song expresses the protagonist’s struggle to seek pure love in a world full of knockoffs.
Written and composed by Sasaki Kissa, it captures a world where cuteness and horror coexist, showcasing Phantom Theta’s multifaceted appeal in its most catchy form.
It’s the kind of track you’ll want to listen to when you’re struggling with online communication or craving a genuine connection.
That is a fairy.Boku ga mitakatta aozora
Debuting in 2023 and winning the Best New Artist Award at the Japan Record Awards in just one year, Boku ga Mitakatta Aozora are set to release their 7th single in December 2025.
The title track is a classic winter first-love song with lyrics by Yasushi Akimoto and music by Daisuke Shirai.
It tells a poignant story of a boy who is captivated by a girl he glimpses by chance on a train platform, and, seeing her as delicate like a fairy, keeps searching for her every morning.
Vivid scenes—winter uniforms, scarves, and crowded trains—tug at the heart, and it’s impossible not to empathize with the protagonist, who senses the love may never be fulfilled yet still engraves the feeling of “I truly fell in love.” The music video, featuring Ami Kanazawa in the center playing a transfer student, has drawn attention for its direction that shifts between reality and imagination.
Highly recommended for anyone who wants to revisit a softly bittersweet page of youth.
TwinkleStartChou Tokimeki♡Sendenbu
Cho Tokimeki♡Sendenbu’s “Twinkle Start” is set for release in 2025, and it feels like a song that gently speaks of hope for the future.
Its relaxed tempo is striking, and it evokes an image of earnestly reaching out to each listener’s heart.
The lyrics, which depict how one wants to spend time with someone special, are also memorable, conveying a sense of savoring happiness.
The song is featured in a Pokecolo Twin commercial starring group members Hiyori Sakai and Aki Sugata.
It expresses the excitement of the moment when the two’s story begins.
