Darker than Black (2007)

S1E7 The Gardenia Releases its Fragrance in the Early Summer Rain... (1)

Gai and Kiko take on a job from a widow who needs help locating her missing black cat. During their search, they encounter Hei, who is on the hunt for a Contractor responsible for the murders of employers from the same company as the widow. As Gai and Kiko delve deeper into the investigation, Gai stumbles upon the skeletal remains of a woman, suggesting that she has been deceased for some time.