It's been 10 years since they got married. Although Chiyuki and her husband still love each other, they no longer have sex at night. One day, her husband consults with counselor Oki, and Chiyuki also has to open up about her married life. As part of the treatment, Chiyuki is blindfolded and asked questions by her husband. Gradually, Chiyuki begins to feel aroused as he touches her body, but it's not her husband but Oki who is touching her body... Although Chiyuki is hesitant about such a stimulating treatment, changes are beginning to appear in their Kokoro...