[3] The group went on hiatus for two years and one month while waiting for their leader, Leeteuk who was serving in mandatory military service.

A week before the discharge of Leeteuk, they also uploaded a picture of the full group rehearsing together, causing great excitement.

[7] It was announced in August 2014 that the group would be making their comeback later that month with a full album and new world tour Super Show 6.

The title of the album was revealed, increasing the anticipation, with around forty teaser images released in the following days.

"[11] The album has a total of 10 songs, and features composers Don Spike, Team One Sound and Hitchhiker.

Band member Donghae contributed music and lyrics to the song 'Shirt,' and also 'Islands' which is about the group's friendship and loyalty.

[1] Super Junior held a press conference at the Imperial Palace Hotel in Gangnam, Seoul on August 28, 2014.

[22][23] Billboard released an article about Super Junior's new album highlighting the experimental variety of music styles.

Allkpop also praised the album writing that composers "crafted a pretty masterful piece of work here.