[5] Last Bell, TWS's first single album, was announced on November 4 with a teaser video uploaded to the band's official YouTube channel.

[6] The trailer, running one minute 34 seconds, portrays the band as high school students preparing for what will be their last winter festival play before graduation, A Midwinter Might's Dream.

The band is shown interacting with girls who affectionately watch them rehearse, teaching them choreography, decorating the stage, and practicing lines.

Over 10,000 fans connected to the line within the first 10 minutes after posting, with tens of thousands of additional calls being rejected due to the service being over capacity.

[9] On the day of release, the band will hold a showcase concert performing songs from the album at Blue Square Mastercard Hall in Yongsan District, Seoul.