Their debut song will be titled “Out!” in their first single album, Ballgame. “Out!” is about a girl who uses baseball’s “three strikes and you’re out” gameplay method as an analogy for the chances she’s given to a cheating boyfriend. With an addictive pop beat and cute vocals, “Out!” is sure to capture the hearts of fans. Keeping with the baseball theme, the teasers images are based loosely off of baseball cards. The group will attempt to debut before Simdol School so AeRi can participate in both activities, along with fellow labelmates Park BoYoung, Lee NamJoo, and Kim SunHwa.