[Streaming Exclusive Special Edition] includes an additional 26 minutes of special footage on top of the regular version, featuring bonus content such as image clips and masturbation scenes for deeper enjoyment. The main story follows Miho, who gave birth and married young, enduring a sexless marriage until her husband's infidelity is exposed when her son reaches university age. Preparing for divorce, she lives separately from her husband when her son returns home for summer break. Using a hot spring trip as an excuse, the family sets off on a journey together. The son confesses, "I love you, Mother," and Miho, touched by his kindness in contrast to her cold husband, finds herself torn between the taboo of motherhood and the pleasure of being desired as a woman. At a secluded inn deep in the mountains, mother and son lose themselves in passion, indulging in repeated intimate acts. This is a story of mother-son incest.