Back Number Unrequited Love Songs: Popular Song Ranking [2026]

Happy Endingback number15rank/position

back number – Happy End (full)

This is a poignant song by back number that portrays a woman putting on a brave face at the moment of parting.

On the surface she tries to send him off with a smile, yet she cannot let go of her feelings for him, and the delicate depiction of her inner turmoil is deeply moving.

Written as the theme song for the film “My Tomorrow, Your Yesterday,” released in December 2016, it also drew attention for its music video featuring actress Erika Karata, and was later included on the album “Encore.” If you find yourself in a situation where you have no choice but to give up while still harboring feelings for someone you love, you may see yourself in this song.

It’s a soul-stirring track that will make you want to listen to it again and again through tears.

Winter and Springback number16rank/position

back number – Winter and Spring

This is a back number ballad about bittersweet love that you’ll want to listen to as the winter chill begins to ease.

Released as a digital single in January 2024, it was produced by Masanori Shimada, who also teamed up with the band on the hit “Suiheisen.” It also drew major attention for marking vocalist Iyori Shimizu’s first time directing a music video, with actress Anna Ishii appearing in it.

With total streams surpassing 100 million, the song has resonated with many listeners.

Its portrayal of relationships shifting with the seasons and emotions that overflow beyond words is sure to offer deep comfort during this time of graduations and farewells.

Why not take a moment to listen closely while reflecting on your cherished memories?

Sing of springback number17rank/position

Sing of spring

A gemlike ballad that delicately portrays tender emotions, where the gentle scenery of spring melts softly together with the ache of heartbreak.

With imagery of a soft breeze blowing along a tree-lined street that stirs memories of a past love, it’s a warm, encouraging song that stands by those who have experienced parting.

Included on back number’s mini-album “Nogashita Sakana,” released in February 2009, this piece carefully traces the feelings of trying to be strong while sensing emptiness, and the resolve to move forward while holding reasons they cannot meet.

It’s a song perfect for the spring season, one that quietly stays close and gives a gentle push to those carrying the pain of goodbye.