After getting married, Sora lives in a two-family home with her father-in-law, Ginji, who is a novelist. One day, Ginji, struggling with his next work, asks Sora for advice, pressing her to help him understand the wavering emotions of a woman in love... It starts with kisses and hugs, but gradually escalates to nudity and masturbation, with their actions becoming increasingly lewd and bold. In this strange situation, following her father-in-law's instructions, the boundary between reality and fantasy blurs for Sora, and she begins to wonder if she has actually fallen in love with him...