[3] After a successful debut in Japan with the singles BTD (Before the Dawn) and Be Mine, the group's agency, Woollim Entertainment, announced their comeback in South Korea with a new mini-album.

[4] On the same day, a teaser logo of the EP was revealed on the group's website.

[6] The song was first played at Infinite's Second concert "Second Invasion – Evolution", in a solo act by member Sunggyu.

On the same day the song was released, an album jacket teaser photo was unveiled on the group's website.

A teaser video of the song "The Chaser" was released on May 11, on Woollim Entertainment's YouTube account.

[10][11] The music video premiered exclusively at Infinite's Showcase: The Mission, on May 15.

[23] At this same day, the group started performing the song "In the Summer" on the TV shows.

All promotions of the songs and the EP ended on July 1, on SBS' Inkigayo.