20thcenturyunnie
Na Bo-Ra from the 20th century is going into high school. Her best friend, Kim Yeon-du, has to receive heart surgery in America, but has fallen in love with Baek Hyun-jin. Bo-Ra promises her that she will get information on him and send messages to her through her computer and keep her updated throughout her time in America. During that time, Bo-Ra falls for Poong Woon-ho, Hyun-jin's best friend and they form a bond. When Yeon-du comes back, Bo-Ra is shocked to realize that all along, she actually liked Woon-ho and mistook him for Hyun-jin.