Others, however, say that butoh is not the exclusive domain of Japanese dancers of a certain age.
In recent years, many Japanese dancers have flocked to Spanish flamenco classes.
Some members of the audience may have thought it foolhardy for a Japanese dancer to attempt flamenco.
Apparently, this emotional dimension does not come easily to Japanese ballet dancers; it is held in reserve.
"I had never seen Japanese ballet dancers," she said.
"Japanese dancers learn technique first, build technically and then work on the artistic aspect."
Following the show, Japanese amateur dancers are also shown, usually 4 dancers per week.
She comes from a family of traditional Japanese dancers and trying to learn many modern dances.
Rather, each work by these Japanese dancers has contained only a few carefully chosen images evoking the forces of nature and the struggles of life.
Her mother is a famous traditional Japanese dancer and her father is well known for playing for royalty.