A disciple of the god Bishamonten. Along with Minamitsu Murasa and the other youkai aboard the Palanquin Ship, she seeks to revive Byakuren Hijiri after she had been sealed away in Makai by humans. Shou was born as a "tiger youkai", not from an actual tiger (which are not native to Japan), but from the fear created by stories about tigers that had spread there. As such, her existence originally depended on the people of Japan remaining ignorant about what real tigers were like.
While Byakuren was still a famous monk in the outside world, she scouted Shou to become a disciple of the god Bishamonten (whom the monk currently worshipped) because she was a youkai, in order for Byakuren to gain the trust of the youkai living on the mountain. Shou, meanwhile, hid the fact that she was a youkai from humans. Bishamonten also assigned Shou a servant, a mouse youkai named Nazrin, not only to assist her but also to keep an eye on her. As the years passed, Shou proved herself a more-than-worthy disciple, and Nazrin's role solidified as her subject. Having a more solid identity as Bishamonten's avatar also prevented Shou from fading away.
After Byakuren was sealed away, Shou couldn't do much - if she had tried to do something, the fact that she was a youkai would have been revealed - so she continued serving Bishamonten. However, hundreds of years later, she, Murasa, Ichirin, and Nazrin appeared above-ground in Gensokyo, where they vowed to rescue Byakuren at all costs.
After Byakuren is revived (and is soundly defeated by Reimu, Marisa and Sanae), Shou and the other followers of Byakuren settle into Gensokyo and work as a means of spreading the influence of Buddhism. Shou herself has been said to have a diligent and well mannered personality, however, she is also forgetful and (at some points) absent minded.
A touhou fan character by, who else but, the
Circle_of_Jermod. Beware the
CURVY LASERS!