Kasen Ibaraki (茨木 華扇 Ibaraki Kasen) who also goes by the pseudonym Ibarakasen (茨華仙) or just Kasen (華仙), is a hermit who is actually also an oni who used to be known as one of the Big Four of the Mountain. She used to be known as Ibaraki-Douji but had her right arm cut off by the Onikirimaru and sealed her wickedness away into it over 1,000 years ago.[2] Since then, She's became a hermit who is also one of the Sages of Gensokyo and now lives in a house within her own Senkai on Youkai Mountain. She first appeared as the the main protagonist of Wild and Horned Hermit then later appeared as a playable character, or possible opponent, in Urban Legend in Limbo as well as Antinomy of Common Flowers.