Have anyone watched the Japanese fantastic animation ID: Invaded? I feel a little confused about the plotline.
Yeah, I read the wikipedia page for it and I can understand why you were confused. If you're not against spoilers, I'd read about a third of the wikipedia page for it. If you're against spoilers, then I'd suggest keeping with the series. It sounds interesting if rather complex. A little bit like Psycho-Pass.
Think of it as a prototype Sybil System awaiting recognition in the police force and said Sybil System is a simulation via Inception, the movie. Bad cop works with good cops capture criminals by tracing criminals' killing intent. Criminal's id is invaded by the cops through the system.