G-Friend revealed the first MV teaser for their upcoming track "Summer Rain".
The 40-second clip features rain pouring down as the girls look a bit sad.
They are in deep reflection holding onto a soaked handwritten letter, on the swings at the park, and staring at a flower vase in a daze, setting an emotional mood.
SEE ALSO: G-Friend drop 'Summer Rain' mood teaser video
'Rainbow' will be out on September 13, so stay tuned for more updates.