Black Cat — Story Arcs & Filler Guide
Episode ranges, plot summaries, and frequently asked questions for every major arc in Black Cat. Updated 2026.
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Sweeper Arc (Manga Adaptation)
Eps 1–20 · 20 epsHow does Black Cat begin?
Episodes 1-20 (2005-2006, GONZO) adapt the full run of Kentaro Yabuki's manga, following Train Heartnet, a legendary assassin for the shadowy organization Chronos known as "Black Cat," who defects to become a freelance bounty hunter alongside partner Sven Vollfied and the mysterious nanomachine-enhanced girl Eve, while Chronos refuses to let its most valuable weapon walk away.
Original TV Arc
Eps 21–24 · 4 epsWhat happens in the final arc of Black Cat?
Episodes 21-24 are a self-contained story created specifically for the anime, not adapted from the manga, giving Train and his allies one last original adventure to close out the TV series.