With the suddenness of Aika's announcement, we didn't have much time to prepare something truly special for her, but we at least wanted to do something and since the Atena & Robikerottsu unit contains both Aika and Risa, it seemed like a good choice.
Of course, Nakky and Chisato are also present in this video along with Aika and Risa, as they were all a part of the unit.
Download link: http://www.mediafire.com/?4zmh2ymjb4ddag6
or watch streaming on the TPF website.
As you can tell from the screenshots, the quality sucks. This was encoded from a streaming source because it's the best we could find on a short notice.
There will be one more release today (and it's a big one), so look for it!