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

A back number ballad that tightens your chest with overwhelming poignancy.

It delicately depicts the pain of unrequited love, where the closeness of being right next to someone only makes them feel farther away.

Knowing there’s someone else in their heart, you still force a smile—some listeners may find themselves in tears at that image.

Included on the single “Hanabira,” released in April 2011, and later featured on the October album “Superstar,” this song offers gentle, beautiful tones to those burdened with feelings they can’t express or hearts troubled by unattainable love.

Why not listen to it on a night when you just want to cry your heart out?

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.

Christmas songback number4rank/position

back number – Christmas Song (full)

Amid the glitter of a winter city, a bittersweet heart can’t help but dwell on the one it longs to see.

This gem of a love song by back number captures the frustration of unrequited feelings.

The title is straightforward, yet it’s striking how it spotlights the depth of emotion for the other person.

Released in November 2015 as their 14th single, it became widely known as the theme song for the Fuji TV drama “5→9: From Five to Nine.” The protagonist struggles to be honest, but ultimately becomes certain of their love for that special someone.

When you need the courage to confess, this song is sure to give you strength.

yellowback number5rank/position

back number – Yellow

Back number’s “Yellow” is a painful yet beautiful number that sings of feelings that can’t reach their destination.

Embraced as the theme song of a dating reality show, it has become a track that gently accompanies many hearts.

Shimizu Iyori’s heartrending vocals perfectly convey both a pure heart wishing happiness for the one they love and the frustrating emotions hidden beneath.

With its heartwarming melody and powerful lyrics, it brings back feelings that everyone wants to keep tucked away somewhere, whether they’ve experienced heartbreak or not.

Combining strength and tenderness, this song is a recommended love ballad best listened to quietly.

Happy Endingback number6rank/position

back number – Happy End (full)

Produced in November 2016 as the theme song for the film “My Tomorrow, Your Yesterday,” this piece portrays the poignant feelings of a woman who has decided to part ways.

Though her love remains, she suffers because she must leave the person she cares for.

Inside, the pain makes her want to cry, yet she puts on a brave face and pretends to be fine with a smile.

These complex emotions are expressed with delicate nuance.

Written and composed by Iyori Shimizu and co-arranged with Takeshi Kobayashi, the song reached No.

3 on the Oricon weekly chart and was certified Double Platinum by the Recording Industry Association of Japan.

It is a song that deeply resonates with those who, despite the pain of heartbreak, are trying to move forward, and with anyone who has experienced parting from someone dear.

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.

HAPPY BIRTHDAYback number8rank/position

back number - “HAPPY BIRTHDAY” Music Video (Theme song for the TBS Tuesday drama “A Story to Read When You First Fall in Love”)

An emotionally moving medium-tempo ballad that portrays the complex feelings of unrequited love—from the faint expectations on the eve of a birthday to the ache of emotions that never reach their destination.

In contrast to the happiness of a birthday, the loneliness and the sorrow of being unable to express one’s feelings straightforwardly resonate with a delicate melodic line.

Released in February 2019, the song was featured as the theme for the TBS drama “A Story to Read When You First Fall in Love,” and was also included on the album “MAGIC.” With vocals that gently embrace the bittersweet emotions of love that everyone has experienced, it’s a song well-suited for karaoke, where it can be performed in a calm, composed manner.

Supporting Actress Syndrome 2back number9rank/position

Back Number – Supporting Actress Syndrome 2 [Chandelier] #8

This is a song by back number that portrays the inner conflict of a woman who, even while realizing she’s being treated as someone to fill a void in the other person’s heart, desperately tries to be liked by him.

The frustration she feels toward herself for accepting a man who shows he’s married right up to the very last moment, and for trying to play the role of the woman he prefers, might be a common emotion among women involved in affairs.

This is what it means to be in a relationship where no one can be happy.

You can’t control the feeling of falling in love, but don’t you think a forbidden love is something that shouldn’t be started in the first place?

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yuri

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Heroineback number10rank/position

back number – Heroine (full)

If you want to express your gratitude to your partner, back number’s “Heroine” is a great choice.

Released in 2015 as their 11th single, it reached No.

6 on the Oricon Singles Chart.

It was also featured in commercials for JR East’s “JR SKISKI” and Kirin’s “Green Label.” This relaxed-tempo ballad has romantic lyrics about how everything is better when you’re together.

Why not send “Heroine” on your anniversary to say thanks for all the everyday things?

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Hamada Takuya

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