"Your Smiling Face" (그 고운 미소 때문에) is a song performed by Jung Seung Hwan and Kang Seungwon. The lyrics describe the intense emotions experienced during a past love. The singer reflects on how they were once consumed by love and how beautiful their partner was. The passage of time seems to freeze when they think about the love they shared. When the singer longs for their former lover, they find themselves looking at the distant sky, reminiscing about the moments of happiness shared during their time together. Even though they can't hold onto the past, the image of their partner's gentle and beautiful appearance remains vivid in their mind. In the midst of endless chaos, the singer observes the people around them who are moving through life with heartache. Despite the hardships they face, the singer emphasizes that they are still alive. The singer's heart remains unsatisfied even when shedding tears or singing loudly. This is because the memory of their partner's beautiful smile fills their heart and nothing else can compare. Overall, "Your Smiling Face" depicts the longing and nostalgia felt towards a past love. The lyrics highlight the beauty and impact the smile of their former lover had on their life, even after the love has faded away.