The newest work by Mistress Mariko Sada, a forty-something married woman with beautiful skin, is a story about her relationship with her brother-in-law. The story depicts how her mind and body are gradually unraveled by her brother-in-law's delicate and bold caresses that exploit her frustration. The threesome scene, in which she is blindfolded with an eye mask, is particularly exciting, and she said she herself went to the Tokyo exhibition of the same series.