Moon Na Young (Mun Na Yeong)

Yoo-i is a very special girl – she's like refreshing and fragrant orange bubble gum… A boy appears all of a sudden and becomes a natural part of her life, as natural as breathing air… His name is Joo-in. He says, "Do you know nuna? Nuna is.. my past, my present, and my future… You are like this ladder connecting me to this world…"