Itzy's 06th Member {AU}

Kim Su-Ha, the loved idol Jonghyun's younger sister. She was 15 when he passed away. During that time she was auditioning for an idol but stopped after her brother passed away. One day JYP came across his trainee's file noticed her file again. JYP announced that there will be a 06th member who will be joining Itzy. She did train along with Itzy. She was the youngest trainee to train at JYPE. But will the netizens accept her? Will she be able to get along with the members?