Bài hát: U (OST Doom at Your Service) Nghệ sĩ: Beakhyun. Lyrics: I still with you Nan yeojeonhi yeogie Cheoeum uri mannatteon geunal Geudaen gieokhago innayo I still with you Nan oneuldo ireoke Geudael barabogo isseumyeon Modeun shigani meomchuneyo Du nuneul gameum yeon Gachi...