Story
Shin Hyuk, the Korean leader of the elite special forces unit "55," composed of the world's best black agents, is devastated when his younger sister, Soo Min, who dreamed of becoming an idol trainee, is murdered in South America. The world tries to cover up the truth. Abandoning everything to investigate his sister's death, Shin Hyuk uncovers that the international drug cartel "XICA" is a likely culprit. In pursuit of revenge, he deliberately approaches the global K-pop star Yoo Chae-won, whom they originally targeted, as her bodyguard.
Synopsis via AniList (English).
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