I think I read up to the first 5 volumes. I had seen the Black Cat anime, and really liked it, so I decided to give the manga a go. I was disappointed. The artwork was static, and difficult to see. Some of the storylines felt cheesy. By the time I stopped following the manga, there was still practically no backstory on the main character (unlike the anime, with begins with the backstory), so it was difficult to connect with him. Overall, I felt reading it was a waste of time.