Johnyeon Stories

Im Nayeon has an identical twin named Im Najeong who is a boy waiting for his debut. However, he met in an accident and Nayeon needs to replace him in the NCT U line up unit which is a very successful 3 member unit. Now, she was forced to act as her twin brother to pursue his dreams to find his mother. Will she successfully make it up as a boy? Or Will she hide her identity well by not get caught?