The drama is one of the one-act drama series of tvNDramaStage in 2022. It tells the story of children who have the right to choose their gender and decide their future when they enter puberty. Choi Woo-sung plays Fang Yulan, who has three older sisters and is very polite to girls. Another main actor in the drama, "Jung Jae", is played by Ahn Hyun-ho. Jung Jae is a character who is troubled about how to choose his own gender.