Heize's song "Traveler" (여행자) tells the story of a traveler who is wandering through life, unsure of the path they are on. The lyrics suggest that this journey is filled with secrets and unknowns, and that the traveler is searching for something that they cannot name. Despite the uncertainties, the traveler is reminded of the beauty they have encountered along the way, such as the love between the sun and moon, and the mix of emotions triggered by music and rain. Throughout the song, Heize offers words of encouragement to the traveler, reminding them that if their burden becomes too heavy, they can lighten their load and find rest before continuing on their journey. Overall, "Traveler" captures the feelings of uncertainty and searching that many experience in life, and suggests that the journey itself can be meaningful and beautiful, even when the destination is unknown.