Don't Forget by Baek Ji Young (IRIS OST) with character conversation subtitle. Lee Byung Hyun and Tae Hee's love story is so romantic yet...so sad....gosh...i really hope their characters end up together in the end! Character conversation subtitles are brought to you by Team IRIS of viikii. HJ: Kim Hyun Joon (Lee Byung Hun) SW: Jin Sa Woo (Jung Junho) CSH: Choi Seung Hee (Kim Tae Hee) Vice President: Baeksan (Kim Young Chul)