and "Reincarnated Beat" : Instrumental pieces used during critical transition scenes. "Time with Dia" : A softer, character-focused theme.
: A fast-paced, high-tension J-pop track that mirrors the protagonist's cold efficiency and inner search for meaning. The World S Finest Assassin Music
: A version of "A Promise" is also sung by the character Dia (voiced by Reina Ueda). Background Score (OST) and "Reincarnated Beat" : Instrumental pieces used during
: Features various OST playlists and unofficial remixes/covers. character-focused theme. : A fast-paced