Back number is a three-piece band known for their overwhelming quality of music and exceptional expressiveness, continuously garnering attention. The official website offers a variety of services, including news updates, concert schedules, media content, artist profiles, merchandise, fan club information, blogs, and archives.

The band recently announced their new song, "New Lovers," as the theme song for the Fuji TV drama series "The Beginning of the Sea." Additionally, they revealed details for their upcoming tour, "anti sleeps tour 2024," along with the announcement of tour merchandise and the release of their music video for "Winter and Spring (Storyboard Version)."

Back number's official site also provides links to their social media accounts and online platforms for fans to engage with the band further. Stay tuned for more exciting updates from one of Japan's most prominent musical acts.