The 2016 single "Happy End" marked a moment of significant commercial success for Back Number, achieving chart-topping status and showcasing their signature blend of rock and emotional songwriting.
- "Happy End" reached number 2 on the Oricon Weekly Singles Chart.
- The single was released by Universal Music LLC.
- The song is from the same year as their best-selling album "Chikyuugai Seinen" (地球$\_$外少年).
Back Number is a rock band from Japan, known for their emotional ballads and mainstream success. At the time of "Happy End," they were a dominant force in Japanese rock, having recently released their most commercially successful album.
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