From what the tour guide stated as we drove through here, this is the sub-culture district of Tokyo. This includes video games, cosplay, and anime, and yes, anime porn as well. All the buildings have large anime posters on them and the first 3 floors of a building are devoted to video game characters, comics, and other fan-related merchandise. However, after that, the next floors are solely devoted to porn, sex toys, costumes, and every category of naughty anime erotica that one could imagine. Having browsed though here, I’m sure internet rule 34 applies; there was some weird stuff to say the least.