Midnight Sun is the fifth EP and the sixth overall by South Korean boy band Beast.

[5] That day, a photo of the EP's title and release date was posted on the band's Korean website.

On July 15, "Midnight" and its video were released digitally on South Korea music sites.

[9] Two days later, Cube Entertainment introduced "Beautiful Night" and posted two photos of Doo-joon, Jun-hyung and Dong-woon.

[15] On July 20, a preview of the music video for "Beautiful Night" was released on Beast's YouTube channel.

On Inkigayo, the group used their performance of "Beautiful Night" in the guerilla concert at Gwanghwamun Square.