Related: Great Transgender Anime Characters They have a genetic mutation where they switch sexes following puberty.
It’s only when he wakes up that he discovers the truth about his family.
But then he faints in shock when he loses a certain part of himself. For the first 16 years of his life, Joonha was an ordinary (if pigheaded) boy who went through life with few problems. For another story with transition, Click takes things in a more scientific direction, albeit still rather fantastical.