a girl by the name of cho yena is 17 years old and is studying at a high school in korea. Her parents decided to work abroad and can't bring yena along so they decided to ask her brother who is in a kpop group called "X1" to take her in and live in X1's dorm. what will happen to yena and the boys of X1?

"I break bones of those who are d*mn stupid but I'll promise that, I will never ever break your heart"