Kannazuki no Miko (神無月の巫女?, lit. Priestesses of the Godless Month) was a manga that began Oct 1 2004 and ran 2 volumes to June 2005. A 12-episode anime adaptation ran concurrently October 2 to December 18 2004.
Source: " the two take a bath together and Himeko appears highly embarrassed at the though of thinking Chikane is attractive and questions herself about being weird because she feels that way. After the bath Himeko is putting on a pair of Chikane’s night clothes."
- Chikane Himemiya is shown bathing with another girl