B2ST's first full-length album, "Fiction and Fact" is slated to drop on May 17th, but before that happens Cube Entertainment gave a treat to all their fans by releasing one of the tracks, "Rainy Days" as a digital single! "Rainy Days", was recorded on an actual rainy day in order to further accentuate a delicate sorrow. Check out the emotional track below and remember to support the artist by purchasing the music.