"Heart Pound (쿵쾅대)" by Eddy Kim is a song about the feelings of falling in love for the first time and the excitement and nervousness that comes with it. The lyrics portray the protagonist's sudden infatuation and their struggle to control their emotions. They express their surprise at how deeply they have fallen in love and how their heart races whenever they are near the person they're attracted to. The song also touches upon the protagonist's insecurities about confessing their feelings. They mention that they never thought they would fall in love at first sight and how they find it difficult to express their emotions to someone. The chorus emphasizes the protagonist's excitement and the intense emotions they experience as they realize they have developed romantic feelings for the person of interest. They express their determination to confess their love and make the person their official girlfriend. Overall, "Heart Pound (쿵쾅대)" captures the thrill and trepidation of falling in love, showcasing the protagonist's emotions and their willingness to take a leap of faith in pursuit of a romantic relationship.