I'm not sure if this is a violent sex film or not, the beginning seems normal but the later part during the group play is very intense with the black men being very rough, and it looks like the female lead is in a lot of pain; she tries to resist but it's useless.
Even though she's almost 40, Asai still looks quite young, with a soft, beautiful face free of wrinkles, and her skin is very fair, making all the men around her... envious. Asai lives with her husband who has gray hair, and even though they are quite wealthy, this woman does not seem happy at all; her husband is always obsessed with collecting antiques, ignoring everyone around him, including his wife...
With nothing to do and plenty of free time, Asai decides to hire a Yoga instructor to come to her home for lessons. At first, she thought her instructor would be a woman, but no, it's a tall, dark man... Since she had already paid, she went through with the classes instead of refusing.
The Yoga lessons became a dark turning point in her life: infidelity, being gang-raped, etc.