Too many to choose from: *Their first meeting. *Times when Doona asked Wonjun to eat together. *When Doona showed up at Wonjun's class *The underpass kiss *When Wonjun and Doona both said what they felt "I am sorry" " I love you" ( communication is key) *When Doona looked back constantly to see if Wonjun followed her (metro scene) *When they finally meet at Japan (Among others)