Architecture 101 (2012)

Cast
Eom Tae-woong (엄태웅) as Present Seung-min (현재 승민)
Han Ga-in (한가인) as Present Seo-yeon (현재 서연)
Lee Je-hoon (이제훈) as Past Seung-min (현재 승민)
Suzy (수지) as Past Seo-yeon (현재 서연)
Jo Jeong-seok (조정석) as Nap-tteuk-i (납뜩이)
Yoo Yeon-seok (유연석) as Jae-wook (재욱)
Kim Dong-ju (김동주) as Seung-min's mother (승민모)
Lee Seung-ho (이승호) as Seo-yeon's father (서연부)

Also known as "Introduction To Architecture"

Trailer

Synopsis
35-year-old architect Seung-Min (Uhm Tae-Woong) receives a visit at his office from a woman. Seung-Min doesn't recognize the woman at first, but then realizes the woman is Seo-Yeon (Han Ga-In). Seo-Yeon is his first love, but he hasn't seen her since his freshman year in college. Seo-Yeon now has a request. She wants to hire Seung-Min to rebuild her home on Jeju Island.
15 years ago, Seung-Min (Lee Je-Hoon) is a naive young man beginning his architecture studies in college. He first meets Seo-Yeon (Bae Suzy) in his Architecture 101 class. As they work on a class project together, Seung-Min and Seo-Yeon begin to fall in love.
Back to the present day, Seung-Min is hesitant to take Seo-Yeon's job offer. Seo-Yeon persists and even goes to his boss with her wish. Seung-Min now has no choice, but to take on Seo-Yeon's home project. Old memories of love and heartbreak will soon resurface, as they find themselves at different junctions in their lives.