藤花

Our protagonist first meets Touka while using the hot springs that are adjacent to the seemingly-abandoned Fujiyu Shrine. Touka has actually been a resident of the shrine for several centuries, but has made little to no effort to venture beyond the shrine itself. Her servant (a youkai rabbit named Suzuhikohime) secretly thinks of Touka as a hikikomori due to her never leaving the shrine. [From Moroboshi Yuumei's review]