Black Lizard: Kuro tokage

In the film "Kuro Tokage" (2019), a private detective named Akechi Kogoro is asked to protect the daughter of a famous gem collector from the threat of kidnapping. However, he later learns that the culprit behind the threats is a mysterious thief named Kurotokage, who has a reputation for replacing real gems with imitations. When Akechi tries to capture Kurotokage, he ends up falling in love with this woman, who turns out to have a tragic past. This battle between detectives and thieves will raise the question, who will be the winner?