by Youngran Lee Joonha, a normal, healthy boy of sixteen, has a surprise when a recent trip to the bathroom suddenly reveals that he's not normal at all! He finds himself missing, well, something he never thought he could live without, and he soon passes out from the shock.While in his half-conscious state, he overhears the incredible truth - his family is abnormal in the weirdest possible way. After puberty, their chromosomes undergo some kind of mutation, which converts their bodies into the opposite sex! Now Joonha has to leave behind 16 years of life as a man and live as a woman. What will his childhood friend Jinhoo and the girl he has always liked, Heewon, say when they find out?