Mischievous Kiss (2010)

Mischievous Kiss is a warm, bubbly drama about falling in love and growing up along the way. Oh Ha-ni, nicknamed "Noah's snail" by her father and friends for her ability to keep trying even though she isn't the brightest in the bunch, has one goal: to capture the heart of school genius Baek Seung-jo. After harboring an all-consuming crush for years, she finally finds the courage to give him a letter confessing her feelings. Seung-jo, an icy perfectionist, coldly rejects her. When an earthquake destroys Ha-ni's house, she and her father move in with an old family friend--none other than Seung-jo's father. Now Ha-ni and Seung-jo must deal with the awkwardness of living under the same roof. Can one determined, warm-hearted high-school girl melt the heart of this closed-off genius?