Shon, 24 years old, older brother, professional NEET. His only talent: win an argument.

Unlike him, his younger sisters are successful and brilliant. There is only one thing they cannot overcome, and that is turning Shon into a functional human being. Lately, this has affected them, and their respective friends/direct bosses, two prodigies of Shon's age, decide for hidden reasons to help Shon recover—a ruthless CEO and a manipulative elite coach.

— both appear in his life to “help” him. Shon discovers that his useless ability could be useful in a way that none of them expected.

“Love is keeping you far away and close, but locked up. But what happens when the world insists on taking you out of your container?”