FAQ for
In the Realm of the Senses (1976) More at IMDbPro »Ai no korîda (original title)

There is one scene which was altered in order to conform to the BBFC's guidelines (Protection of Children Act 1978) because there's an immoral contact between a woman and a minor. During this scene, Sada (during a dream) pulls a small boy's penis. The scene was altered so that you don't see her hand touching the boy's pubic area. This cut was waived for the latest UK release of the movie. A comparison between both versions can be found here.