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.
Those of you in Japan might want to check out Rakka Ryuusui's final volume release (vol 9) that goes on sale this 27th March - some nice artwork comes with buying from certain specific stores.
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.