Darker than Black (2007)

S1E12 Beyond the Gate, Recovering the Lost... (2)

Nick and a small group of researchers venture into the forbidden area of the Gate to recover what they think is a piece of a meteorite. However, chaos ensues, leading to the team's tragic demise, leaving only Nick alive. Hei soon discovers that Nick is also a contractor with similar powers and possesses the meteor fragment. When Hei confronts him, a fierce battle breaks out between the two. Will Hei manage to overpower Nick, or will an unforeseen event interrupt their clash?