Back Number Love Songs: Popular Songs Ranking [2026]

bouquetback number1rank/position

back number – Bouquet (full)

This is a gem of a love song where unpretentious conversations between lovers convey a clumsy yet profound affection.

It portrays a vague anxiety about the future alongside a straightforward desire to stay together, and listening to it warms the heart.

Released in June 2011 as back number’s second single, the track is also included on the acclaimed album “SUPER STAR.” Many will recognize it as the ending theme for TBS’s COUNT DOWN TV.

The fact that it received over 50 power plays on radio stations nationwide at the time speaks to how much attention it garnered.

This work, which makes you feel the preciousness of everyday life with someone important, continues to be cherished as a classic wedding song.

Happinessback number2rank/position

Shiawase

When it comes to love songs, you can’t leave out the band back number.

Released to the world as the B-side to the single Hanabira in April 2011, this track is a hidden gem that carefully captures the subtleties of unrequited love.

Over the course of its six-and-a-half-minute length, it quietly unfolds a poignant feeling: the closeness of being right next to someone striking all the more as a decisive distance.

The lyrics, which present with a straight face the pain of only being able to sustain the relationship by wishing for the other person’s happiness, resonate deeply beyond the bounds of a typical heartbreak song.

It’s a recommended track for anyone seeking a love song tightly packed with bittersweet longing—one that calls up memories of the truths you couldn’t say.

Even if I forget somedayback number3rank/position

back number - Even if I someday forget

There’s no such thing as forever—everything is eventually forgotten—but… I truly understand that lingering attachment.

The end of a romance isn’t something you can process quickly.

A building might go up over the parking lot full of memories, the cityscape you once saw together might change, and yet the yearning to remain within you as something that doesn’t change… that lingering feeling is so heartrending.

yellowback number4rank/position

back number – Yellow

This is a classic ballad written as the theme song for ABEMA’s romance show “Don’t Be Fooled by the Wolf and the Rainbow,” portraying the bittersweet feelings of unrequited love through metaphors like a “yellow traffic light.” The music video, directed by Yuki Yamato, has become a talking point as a “music video that deepens understanding even without dialogue.” The song’s overall vocal range is D3 to B4, which is somewhat wide and requires skillful use of both chest voice and falsetto, but I think it’s a piece that can be carried more by expressiveness than by pitch accuracy.

If you sing while infusing the lyrics with your feelings and emotions, it will become a thoroughly good performance.

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Kubota Mami

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Christmas songback number5rank/position

back number – Christmas Song (full)

A song whose contrast between the festive winter cityscape and growing feelings strikes the heart.

Released as a single by back number in November 2015, it drew attention as the theme song for the drama “5→9: From Five to Nine.” It was also included on the album “Chandelier,” and has been loved for years, even topping the karaoke staple rankings in 2019.

The piece portrays an awkward emotional state—unable to express one’s feelings—while watching happy couples from the sidelines.

The earnest emotions sung over warm piano and strings gently comfort those who regret not confessing their love or who are struggling with the frustrations of unrequited feelings.

Happy Endingback number6rank/position

back number – Happy End (full)

This is the 16th single by back number, used as the theme song for the film “My Tomorrow, Your Yesterday.” Released in November 2016, the track weaves wistful piano and strings into the band’s sound, portraying the raw emotions of trying to accept a parting.

The tenderness toward the other person and the contradictory feeling of having to separate despite still being in love come poignantly through in Iyori Shimizu’s delicate vocals.

Many listeners may relate to the earnest bravado of hiding the truth—that you don’t want to part—and trying to let it end as a beautiful memory.

It’s a ballad that stays close on nights when you bear the pain of an unforgettable love and just want to quietly shed tears.

loveback number7rank/position

back number – Koi (full)

This is a song by the rock band back number, loved for its heartrending, relatable lyrics and friendly, expansive melody lines.

The lyrics reflect the bittersweet feeling of the end of student life and a straightforward, hidden affection.

Even with low self-esteem, you can’t help looking for the one you like… it’s the kind of content that makes your heart skip a beat.

Released in March 2012, the song was used as the ending theme for TV Asahi’s “Music-ru TV” that same month, and it’s also included on the classic album “blues.” If you sing it at karaoke, even a man who doesn’t usually voice his feelings might be able to subtly convey them to the woman he likes.