Hasumi Kurea retired in June and deleted her twitter at the end of the month. A couple weeks before she'd twitted she'd reached her mental and physical limits, and was doing to do some introspection... There are still films coming out because it takes at least a couple months to release...
As for Hasumi Kurea, I'm not sure about her current situation, but I do know she left Five Promotion (subsidiary of Marks Japan) after the Fujiwara Hitomi scandal and tweeted she was now attached to an agency with apparently no track record (I took a look at their twitter and they only had like a couple twits, welcoming Kurea, and I don't even remember them having a webpage). It looked to me like she was trying to establish her own agency, it doesn't take much more than some connections and phone numbers, an office and a guy who can double as desk and babysitter manager. So that'd explain the drop in production.
Edit Found it, Kurea announces she's now managed by gmintpro
http://blog.livedoor.jp/kurea_hasumi/archives/48980943.html
She attached in July, so the videos for the first gigs under that agency should begin their release shortly. We'll have to wait and see if she did manage to snatch some contracts.
The agency "webpage" is a blog with two entries to welcome her and explain the whereabouts of the incorporation: they were going to manage a retired actress considering her comeback who later hit the brakes, and they got in touch with Kurea at the time she was looking where to go after Five Promotion. This looks like either Kurea trying to start her business (and making up this little story to hide it's her), or 1 guy with some connections and experience. It's stated in the blog that they are looking for actresses. It seems so modest I find it interesting, I'll keep an eye on their activity because it could bring some insights into how that world works, and I wonder if that could scale or if they could land a future star. I was surprised to discover that Tsubomi (whose weight in the industry is well-known) is attached to Vanquish Pro, which judging from their online presence (a couple outdated blogs) is a small agency with just a handful of actresses. I read somewhere talent agencies have between 7:3 (for regular actors, announcers, etc.) and 5:5 staff to talent ratios, so that'd mean the agency is at most a dozen ppl and they form a little family of sorts, worlds apart from the (defunct?) Marks Japan or T-powers many actresses flew to.