Do you need the raws for this series? I managed to find raws up to volume 6 and since this series is one of my favorites, and it has not been updated for a while, I would like to offer whatever help I could.
Rakka Ryuusui was being scantalated by Horobi no Michi. Horobi had a very rough 2012 and hasn't released or updated since last year. So it's (probably) not so much about needing raws as it is needing someone interested in continuing it.
I was always wondering why this series is tagged Yuri Crushand not Yuri. I mean, sure, it is a onesided yuri cursh for now but I was always pretty sure that that was just temporary. Anyways, The author says there are 5 yuri couples in the final Volume 9. Not that it matters anymore, being abandoned and all.