This is one of my favorite anime of all time. It takes place in Bubblegum Crisis universe, but you don't really need to watch that anime to pick this one up. It is some old school, hand drawn, gritty cyber-punk. It is very adult themed, with ideas about human sexuality in the age of androids being interwoven into the story. The soundtrack is really, really good. It is some underground type EDM stuff that goes really well with the dark drawing and atmosphere of the whole show. Old school cyber punk style anime is kind of my thing, and this is one of the bestout there.