Kim soo young or SY who is 13 years old , is a trainee working in bighit along with her bestfriend mina who is also 13 "Bts themselves will be you teachers for your while training year and maybe more " Jackson our manager said . "Hi we are bts your teachers " all the members bowed . Jungkook looked at soo young ' wow .....she's beautiful......' jungkook thought . ' when can I make her mine ' Jimin thought . 'love at first sight ? Yoongi thought ............. eventually all the bts members falls for soo young as she grew .......who will she chose ?