Shoyuna, Unfortunately, there's no new collaboration between Choi Ji Woo & Kwon Sang Woo. I wish they do. I don't understand the South Korean movie people why they don't put them together again because they had such a great success in Stairway to Heaven. What's their problem. I'm pretty sure that if they put them together again in another drama with a good storyline, it will be a big "hit" because their audience misses them & is very eager to see them together again.