This is a secret romance between two idols, one a cool yet extremely negative person and the other a secretly negative cheery guy, that starts with a prank!

HardCORE is an idol group that's currently growing in popularity. Kaito, who is in charge of comedy, is panicking because he can't come up with a video idea for a competition where the winner will win the chance to have a solo song. He has no confidence in himself to be able to perform solo and has no motivation for the video, so he picks a random idea: a prank where he confesses his love to Sousuke, a fellow group member who he's always at odds with. Kaito is convinced that Sousuke will simply respond coldly, but instead Sousuke responds with, "I've always loved you"! This is a heart-fluttering idol romantic comedy featuring two people of completely different personalities!