Pinocchio

As a child, Ha-Myeong (Lee Jong-Suk) grew up in a family with his firefighter father, mother and older brother. Ha-Myeong and his older brother (Yun Kyun-Sang) both possess higher than normal intellect and are proud of their father. A fire at a waste facility though destroys his family. His mother dies a short time later and Ha-Myeong ends up being scooped out of the ocean by an unknown man (Byun Hee-Bong). The man that pulls Ha-Myeong out of the ocean is the grandfather of In-Ha (Park Shin-Hye). In-Ha's grandfather believes Ha-Myeong is his eldest son Dal-Po, who died 30 years ago. Ha-Myeong is then adopted by In-Ha's grandfather and his name is changed to Dal-Po. In-Ha and Dal-Po now live together as uncle and niece, although they are in the same age range. In-Ha has a Pinocchio Syndrome. Whenever she lies she gets the hiccups. Source: AsianWiki