Marginal #4 made their debut at the Universe Festival that their production company, Pythagoras Productions, hosted. They say that they are the "idol group that will deliver a kiss to the end of the galaxy". Their goal is to have a solo live show in the Shooting Star Hall. Though they just took their first step as idols, in "real life" they are still high school students! Atom wants to cherish both the once in a lifetime high school experience and their work, so he tries to form a club with L and R.