ITS HEREEEEEEEEEEEEEEEEEEEEE!!! (and official)
It seems RAHWIA finally unveiled the project that she has been working secretly with "Senka"!!
They'll be working together (along with various other people) in a group called [Studio] GUIANA.
You can the site here ~ A nice thing is that some things are in English.
For the record I only used "Senka" for the sake of coherency. Please not use that name to refer to him anymore.
Also please do not add this information to his page as from what I can tell he does not want any connection to the name "Senka" anymore. Thanks