I watched Kurosagi the movie (映画 クロサギ) today, too.
Kurosagi is originally a manga serialization by Kuromaru and Takeshi Natsuhara on Weekly Young Sunday (週刊ヤングサンデー). It was made into a TV drama from 14 Apr. to 23 Jun. in 2006 and the movie is the sequel of the drama.
Kurosaki, the hero of it is a swingler burning up only cons. In TV shows, he has clients in all cases but in the original, not in all. In the original, as he does in TV shows, he buys information from Katsura, the fixer of swingler society. Katsura is the planner of fraud leading Kurosaki’s father to family suicide. So Kurosaki, himself is a victim of fraud and he’s become one for revenge on all cons but he needs Katsura.
In all versions, Kurosagi looks a sort of Mission Impossible since all episodes show interesting tricks. The episode of Kurosagi the movie, too. It is based on the original serialization, too, as the all episodes of the TV drama version. One swingler’s con smashed up many corporations to damage Japanese economy itself. So Katsura whip him by Kurosaki.
I’d read the original episode when I watched the movie but probably you can enjoy much more without reading it.