After getting married, Sora, who lives with her husband and father-in-law Ginji, a novelist, in a two-generation household. One day, when Ginji consults Sora about his next work, troubled by love's emotional turmoil, he presses Sora to understand the feelings of a woman in love... Starting with kisses and embraces, it gradually becomes more lewd and bold, with nudity and self-pleasure. In the strange situation where she does as her father-in-law says, Sora begins to lose the boundary between reality and fantasy, wondering if she might actually be falling in love with him...
