Someone needs to open one in the USA. For everything from eroge and adult Doujinshi to hentai and figures and silicone dolls. I know they have online stores but it's not as fun as a real one. I did a search and could only find ones online.
Don't just stop at the USA. Bring one of those over here in South East England as well! :)
Not saying I'd actually go to one and buy stuff. I'm just, y'know, lookin' out for people.
After studying abroad in Japan for a year, I gotta say their adult stores are out of this world. Multi floor with everything you could imagine! Definitely disappointed with what we have in the states.
I would start one here but nobody is going to loan me $10 million. I would have a huge one too, including a huge selection of silicone sex dolls. Along with toys, eroge, erotic novels, even erotic art work.
I think it would be difficult here in the states for a ground-based business seeing as the consumer base probably would be really small. Although if you got to the point where you were the biggest supplier in the states you could probably attract customers from around the country and Canada.
It's called Amazon :P
I want a walk in store so I can see everything in person.
Luckily I bought a crap ton of doujinshi and various H goods while I lived in Japan. I could probably make my room a small shop with how much I bought lol.
I would be to social akward to buy something like that in RL.