Darker than Black (2007)

S1E14 On a Silver Night, the Heart Does not Sway on the Water's Surface... (2)

Kastenin, Gai, and Kiko escort Yin back to her hometown, while Hei receives a directive to eliminate her and is informed of her whereabouts. However, reaching Yin proves challenging, as the contractors from earlier are still on her trail, employing their own tactics to track her down. The stakes are high once again, but this time, Hei faces a critical decision: will he go through with killing Yin, or will circumstances decide for him?