Themed Wrapping of Seoul Subway Line 4 âď¸ Location: Seoul Subway Line 4 đ°ď¸ Display Period: December 1 - 31, 2025 The support campaign covers all 10 cars of the entire train, featuring 120 framed displays and 80 ceiling stickers. The framed displays are placed in areas with high passenger visibility, ensuring direct and clear message delivery, while the ceiling stickers offer a wide visual range and create a strong ambient atmosphere. The goal is to achieve an immersive promotional effect across the entire train, encouraging more people to send birthday wishes to Sunghoon. Special thanks to @Twinkle_021208 and @CLOSE2oU for the authorization.
