A limited-edition monograph, detailing some of the album production process, was released on September 30, 2016. It contains a 150-pages photobook and a 45-minutes DVD, both featuring behind-the-scenes pictures and footage from the album photoshoot and the "Cheer Up" music video shooting; and 9 member photocards.
"Precious Love" is a cover of Park Ji Yoon's song, released in 1998. The rap verse in TWICE's version has been written by Chaeyoung.
"I'm Gonna Be a Star" was the theme song of SIXTEEN and was performed on the final episode of the show.