Rorochi's Sisters.

Rory and Orochi have 7189 (Seven Thousand One Hundred and Eighty Nine) sisters. One of them is Dorkness, another is Paorou.

However, the twist was that they were actually onee-samas (older sisters) all along, so refer to them as SIS and not BRO.

Also, having lesbian sisters is horrifying. Unless you're into that kind of thing. sicko. (Are they twins?)

(Twincest is Wincest)

This is SRS BSNS.