DAY6 continues to prepare their comeback as they release a comeback teaser film.

Previously after announcing their comeback, the boy band released a teaser poster followed by the first film teaser.

 March 31 KST, they continued to show a preview of the continuation with their 'The Book Of Us' series and revealed the title of the upcoming album through a trailer film. The trailer film showed an illustration animation giving a short description and title of the album 'The Book Of Us: Negentropy.'

The release date has been set for April 19 KST. So stay tuned for more teasers to come!