Gushing Prayer (1971)

Desensitized and dissatisfied, a young yet jaded sexual veteran sets out on a journey of self-discovery while teetering on the threshold of womanhood. Yasuko is taking part in an orgy when she realizes that she has lost all feeling - not just physically, but emotionally as well. Now, with the weight of responsibility and adult expectation weighing down on her shoulders, Yasuko attempts to better understand how she could be so empty at such a tender age.