Reiko Ike had to be fully nude for days while filming her sword fight with the group of male samurai. The scene was shot from angles to avoid showing her pubic area on screen, but she said in an interview that all of the actors and crew could see every part of her, including between her legs as she spun around and moved into different positions. She said after awhile it didn't bother her anymore and just ignored the fact that she was nude.
OCHO series. #1 of 2 films.