Aliasing roripo to tatata.
Reason: As noted in the artist wiki for roripo, the site has moved from http://adult.csx.jp/roripo/ to http://adult.csx.jp/tatata/
The artist now has a pixiv account also and we've got images under both roripo and r_tatata. I cannot see any source for the "r_" other than the pixiv URL, on the artist's site it just says "管理者：たたた".
Updated by jxh2154