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 (1–10)
First Love RevivaliLiFE!

Even when you think you don’t expect anything from love, there are those moments when your heart suddenly skips a beat, right? This iLiFE! track captures that unexpected thrill—a number that makes you feel like the heroine of a story just by listening.
Sparkling synths and a bouncy rhythm reboot emotions that had gone cold in an instant.
Released in August 2022 and later included on the January 2023 album “iLiFE Starter Pack,” it’s been nurtured alongside fans as a live staple.
The sense of unity that’s completed by everyone shouting together and sharing the energy across the venue is truly exceptional! If you’re craving a spark in a dull everyday routine or want to get hyped without overthinking, this song will undoubtedly be a powerful ally.
Mermaid in FebruaryAKB48

This AKB48 song paints a romantic scene that makes you want to head to the chilly seaside in lingering-February cold.
It’s memorable for lyrics that liken carefree frolicking by the winter ocean to a mermaid, turning even the cold spray of the waves into shared memories.
Performed as a unit song with Azuki Yagi on vocals at a theater show in December 2024, it was later included on the album “AKB48 ~studio recordings collection~ AKB48 18th Stage ‘Koko Kara da,’” released in December 2025.
This work is a bittersweet love song that captures feelings of affection so strong they make even selfish behavior seem adorable.
It’s the perfect track for gazing out at the quiet winter sea and sinking into a sentimental mood.
Graduation of Unrequited LoveAKB48

Let me introduce an AKB48 number that marks the passage of time at graduation and portrays an unspoken one-sided love.
Released in March 2007 as part of Team K’s 3rd Stage “Nounai Paradise,” it’s a song that has been passed down in theater performances.
You can laugh within your circle of friends, yet say nothing in front of the person you like as graduation day draws near.
Those bittersweet feelings are carefully spun over a gentle, mid-tempo melody.
Rather than flashy production, the arrangement treasures the afterglow of the words, quietly seeping into the listener’s heart.
This work captures a moment of youth swaying between the fear that love might end unfulfilled and the desire to express your feelings anyway.
It’s a number we recommend not only to those about to graduate, but also to anyone who wants to remember who they were back then.
Mutual Love Songs Sung by Idols: A Collection of Happy Love Songs (11–20)
GraduationHikaru GENJI

Let me introduce a classic by Hikaru GENJI, released in November 1987 as the B-side to the single “Garasu no Jūdai.” With lyrics by Ryo Asuka and music by CHAGE—a truly star-studded team—this work is a coming-of-age ballad that movingly captures the milestone of graduation.
The lyrics not only convey the sorrow of parting but also weave in the hope of taking a new step forward, leaving a deep impression on the heart.
On Music Station in September 1995, the group performed the song with a memorable staging in which the members removed their roller skates and placed them on the stage, bringing many fans to tears.
It’s a track that showcases the group’s delicate emotionality—another facet of their appeal beyond their dazzling performances.
A deeply moving song recommended not only for those facing graduation, but for anyone experiencing a farewell with cherished friends.
uniformMatsuda Seiko

Originally released in 1982 as the B-side to the eighth single “Akai Sweet Pea,” this song has long been cherished as one of Seiko Matsuda’s hidden masterpieces.
With lyrics by Takashi Matsumoto, music by Kureta Keiko (the pen name of Yumi Matsutoya), and arrangement by Masataka Matsutoya, it was created by a stellar team.
The lyrics portray the feelings of the protagonist walking beside the person they like amid a sea of umbrellas on graduation day, brimming with the bittersweet tension between the desire to confess and the urge to hold back.
It masterfully condenses the universal theme of the end of student days into just 3 minutes and 33 seconds.
Despite being a B-side, its quality is such that Seiko Matsuda herself said it was “as complete as an A-side.” In 1984, it was included on the compilation album Touch Me, Seiko, which collected coupling tracks and reached No.
1 on the Oricon weekly chart.
It’s a song I highly recommend to those setting out on a springtime journey or anyone nostalgic for their school days.
Search for Diamond Lily=LOVE

Cherry blossoms, an old school building, a uniform button—packed with such scenes of spring, this =LOVE song is the group’s fifth single, released in April 2019.
With lyrics written by Rino Sashihara and a fresh melody crafted by multiple composers, it pairs a bright tempo with lyrics that gently ache with the passage of time.
It reached No.
2 on the Oricon Weekly Chart and earned a Gold certification from the Recording Industry Association of Japan.
The track was also featured in Mr.
Fusion’s programming school “Prosta Kids” commercial.
In its story-driven music video, the turmoil of parting with friends is portrayed with care.
It’s recommended not only for those approaching graduation, but also for anyone who struggles to put their gratitude for friends into words.
Listen as spring arrives, and you’ll feel moved to cherish the time you have with the people who matter most.
It smelled like shampoo.22/7

A 2nd single by 22/7 that portrays a secret longing for an upperclassman at an all-girls school.
Released in April 2018, the song delicately weaves the feelings of a faint, bittersweet crush.
It tells of parting with a senior who is leaving the club, the image of a white blouse turning translucent in backlight, and a gently drifting scent.
While carrying a love that can’t be told to anyone, the story unfolds up to the moment the senior embraces her, tightening the chest with every scene.
This work leaves the ache of an unfulfilled first love, yet also a lingering sense of solace.
It’s a song that quietly stands by those who cannot confide their feelings for someone of the same gender.


