If it was hosted in Japan there would need to be censor bars on the lewd images

My guess is the lack of ads and not selling anything, that's how a lot of things wind up getting the axe even when they are legal. Well, that and, yeah, the site is pretty small

I'm sure the site COULD have issues if the wrong person saw it, got offended and decided do DDoS or something, but as long as the site is hosted where all this stuff is legal, it probably won't get in any major trouble