Shibuya
Shibuya is definitely the youth center of Tokyo, which probably reflects the kinds of places that operate here. The place abounds with image clubs. Take the Hachiko exit, walk past the dog statue and head up the street center-gai. You will start to see the street culture of Japanese youth. In center-gai you can find the famous Seiki 21, which is opposite Java coffee just up from HMV records. If you have never heard of the place, it made famous because you can get two blowjobs for around 50 bucks. Armed with a bit of the lingo and confidence you can have a lot of fun here.