Unrequited love songs of the Heisei era. Those nostalgic classic tunes.

Super Ball of Loveaiko

aiko - “Koi no Superball” music video

This is a feel-good number by singer-songwriter aiko, set to disco sounds that capture the thrill of a summer-tinged romance beginning.

Released in May 2011, the song brilliantly uses the metaphor of a superball to describe a love that could bounce off in any direction.

The way it conveys overflowing feelings for someone special—almost giddy from the summer heat—is something anyone in love can deeply relate to.

It was also featured in a Calpis Water commercial, and its refreshing, effervescent vibe captured many hearts.

A sparkling, danceable track that brings back the excitement of falling in love.

In loveHY

HY - “In Love” (Theme song for the film ‘366 Days’) Music Video

Even if you weren’t the one they chose, the fact that you loved doesn’t change… A bittersweet yet forward-looking sentiment runs through this touching HY ballad.

Written as the theme song for the film “366 Days,” released in January 2025, the track is positioned as an answer song to their 2008 classic “366 Days.” It beautifully portrays emotional growth—rising from the pain of heartbreak and embracing even that experience as a cherished memory—and is also included on the album “TIME.” Set across Okinawa and Tokyo, the film unfolds a pure love story spanning 20 years, and this song superbly captures its worldview.

For those who have reached the end of a romance, or who are about to take a new step forward, this is a song that will gently give you a push.

If you are with meKahara Tomomi

Anataga Ireba

This is a moving ballad released in September 2004, marking Tomomi Kahala’s 30th birthday and her step into a new stage.

Its pure and powerful message—that the world shines simply because someone precious is by your side—deeply resonates.

The piece is a Japanese cover of a song by the Korean band Weather Forecast.

A magnificent piano-based arrangement melds with her rich, expressive vocals to gently envelop the listener.

This beloved song, which won the Gold Prize at the 46th Japan Record Awards, is also included on the commemorative album “NAKED.” It’s the perfect track for expressing gratitude to someone special or for quietly filling your heart on a solitary night.

YOU… feat. Izumi Nakasone (HY)Kato Miria

Miliyah Kato “YOU… feat. Izumi Nakasone (HY)”

Speaking of collaborations between powerhouse female singers, we can’t forget this song by Miliyah Kato and Izumi Nakasone of HY.

Based on real unrequited-love stories sent in by radio listeners, the two artists co-created this gem of a ballad.

Released in September 2014 as their 30th single, it was also included on the milestone 10th-anniversary album “MUSE.” The frustration of not being able to put your feelings into words, and the emotional wavering as you move toward confessing your love, come through poignantly in the harmony between Kato’s delicate vocals and Nakasone’s warm voice.

Chosen as the theme song for a radio drama, this track just might gently give you the push you need if you’re struggling with a one-sided love.

Pure Love SongShonan no Kaze

Shonan no Kaze “Junrenka” MUSIC VIDEO (Original ver.)

This is one of Shonan no Kaze’s signature love songs, a heartfelt tale of a clumsy man’s unwavering devotion that really hits home.

Many people may have discovered them through this track.

From the everyday happiness of being moved by a lover’s home-cooked meal, to the small misunderstandings that create distance, and finally to the raw realization of one’s own immaturity and the renewed appreciation of the person who matters—this straightforward story resonates deeply.

Released in March 2006 as their fifth single, it achieved an astonishing 25 consecutive weeks at No.

1 on the Oricon karaoke chart.

Blending reggae’s fiery energy with a catchy pop melody, the song is perfect both as a dedication to someone special at a wedding and for belting out with friends at karaoke.

KissHugaiko

aiko- 『KissHug』music video

This is a hidden gem by aiko, who has created countless masterpieces.

Many of aiko’s songs are easy to sing, and this one is of course no exception.

The lyrics clearly depict the feelings of a girl who has had a long-standing crush on one person, and they make my heart ache with nostalgia for my own youth.

You don’t listen to rock.aimyon

Aimyon – You Don’t Listen to Rock [OFFICIAL MUSIC VIDEO]

A third major single by Aimyon, whose lyrics brim with unique scenic imagery and wordplay, and whose songs—tinged with a certain nostalgia—captivate a wide range of listeners.

Since its release in August 2017, it has remained highly popular among fans, and in 2019 it surpassed 100 million streams, making it one of Aimyon’s signature tracks.

The unrequited-love story carried by a brisk acoustic guitar will likely make many people reminisce about their youth.

It’s a song for anyone feeling that frustrating longing when the desire to share what you love with the person you care about just doesn’t get through.