This episode preview is narrated by both Kagome and Subaki.
Sango: Can you take care of Kagome?
Miroku: No, I think I'd rather take care of Inuyasha.
Sango: Me too. I can fight Inuyasha without any second thoughts.
Inuyasha: Hey! What do you two mean by that?
Inuyasha: Kagome! Do something about Kagome!
Kagome: Would you stop calling that thing my name!
Miroku: It's the hand, it's possesed by a demon.
Inuyasha: You're possesed by something but it ain't a demon.
Japanese episode title: 行く手を阻む紅白巫女
Romaji episode title: Yukute o Habamu Kouhaku Miko
Translated episode title: Red and White Priestesses Hindering the Way
This episode first aired in Japan on March 11th, 2002.
First aired on YTV (in Canada) November 19, 2004.
This episode is original to the anime. The Tsubaki arc does not have this continuation in the manga.
Momiji and Botan
It is possible that these are references to other animes. There was a character on "Blue Seed" named Momiji and a character on "Yu Yu Hakusho" named Botan. Since these two animes, like Inuyasha, deal with demon slaying, it's quite possible they are references to these animes.
Momiji & Botan:
The girl's name is the name of a certain maple tree. You will notice that when she attacks, there are maple leaves in the background. Botan is also a type of tree, the peony.