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- Type: TV
- Studio: Gonzo
- Publish Date 2005-11-07
- Status: Completed
- Genre: Action Adventure Animation Comedy Crime Mystery Sci-Fi
- Scores: 2.53 by 4,405 reviews
- Duration: 24 min
- Views: 608
Because of his lightning-fast reactions to attacks and his status as Number Thirteen as a member of the elite Chronos society, Train Heartnet is known as the Black Cat. Until he meets Saya, a bounty hunter or "sweeper," he is an unstoppable master gunman who kills with coldness and emotion. She teaches him the importance of a human life and the idea that one should live rather than perish as a result of one's mistakes. Train, who also becomes a sweeper, learns to love and care for others from her as he travels with his buddy Sven and the mysterious Eve.