Kana Yua: добровольное подчинение - часть.3

From her debut to the present, Kana Yua has been running forward without stopping. In her past works, she has shown the duality of "S" and "M." This film explores the core of this duality. In this work, which approaches the deepest core of this duality, Yua Kana is trained and subjugated by hand twisting her and driving her into a fierce corner as she desires to be "subjugated". What did Kana Yua show when she was driven to the point of mental breakdown...?