Seiga Kaku is a villainess from Touhou Project debuting in Ten Desires. She was a Chinese human who had a large interest in Taoism and one day, she became a hermit. She used a technique she learnt from a book and faked her death. Seiga wanted to spread Taoism around her country, however Taoism was already popular in her country, so Seiga moved to Japan and tried to spread it there. She caught the ear of Toyosatomimi no Miko, who became very interested in Taoism. Later, Miko became a hermit, too. Seiga waited a long time for her resurrection.