Yu Oh-seong credited as playing...
Lee Joon-seok
- Lee Jeong-suk: Sang-taek, I planned on seeing you and Joong-ho at the airport. Sorry I couldn't make it. Sang-taek! In high school, when you ran away, and then I sent you back home, I bet you didn't know how proud I was of you. Honestly, I wished I was you back then. Isn't it funny? I was home all day today after a bad experience with Dong-su, thinking about what the word "friend" means. I didn't know what friend originally meant until our teacher wrote the definition on the board. I remember he wrote 'a long and close companion'. Doesn't it sound great? My father always told me that loyalty is a man's life. But I'm confused about that now. In fact, I'm not sure what loyalty is anymore. Sang-taek, I'm planning to travel for a while, like you. I'll send this letter to Joong-ho's address. Take care of yourself until you get back. Your friend, Joon-suk.