Usually applied to movies with dark lighting and darker outlook, a particularly bleak variety of hard-boiled crime story, where everyone is a villain, betrayal is inevitable, and frequently no-one is left standing at the end.
French for black; it's used to describe the color of dark grape varieties, such as Pinot Noir (black Pinot), some of which are almost black in appearance.
this is the French term for Black Bet.
While at first they seem to be only vaguely related to each other, there are clues and hints given throughout the series that there are more than meets their eyes. During the course of the series, they are lured into more and more traps by a secret organization named Les Soldats ("The Soldiers" in French). The anime draws inspirations and influences from two prominent films by French director Luc Besson, Léon and Nikita.