I recommend Talk Saeksi because I like the free-spirited vibe.

It is a song filled with a bright and cheerful atmosphere. You can feel the members' playful and natural charm. The rhythm is great, so it lifts your spirits the moment you hear it. It is a song that makes you feel like you are going out with friends. The chorus is addictive, so you keep singing along. It is a song that makes you feel the freedom of youth. It is a song that makes you smile just by listening to it.