The World S Finest Assassin Music May 2026

: A fast-paced, high-tension J-pop track that mirrors the protagonist's cold efficiency and inner search for meaning.

: A version of "A Promise" is also sung by the character Dia (voiced by Reina Ueda). Background Score (OST)

: A signature track reflecting the dual nature of Lugh Tuatha Dé.

: A fast-paced, high-tension J-pop track that mirrors the protagonist's cold efficiency and inner search for meaning.

: A version of "A Promise" is also sung by the character Dia (voiced by Reina Ueda). Background Score (OST)

: A signature track reflecting the dual nature of Lugh Tuatha Dé.

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