A special digital-only release titled Mother-Son Copulation: Forbidden Love, this complete new version includes over 26 additional minutes of exclusive footage not found in the standard edition. The story follows a single mother who, after raising her son alone following a divorce, finally sees her child nearing independence and securing a job. She decides to take a hot spring trip with him, during which he confesses, "I love you, Mom." Despite their familial bond, unable to resist his feelings and seeking to fill the emotional void within herself, Mari Koharu gives in to her son's affection. Drawn into a forbidden relationship deep in the mountains of Gunma, this film unfolds a tale of impulsive, taboo desire and pleasure between mother and son. Produced by Ruby under the Journey label, this shocking narrative explores the fragile bond between a mother and son torn between daily life and uncontrollable desire, leaving a powerful impact on viewers. Featuring Milf, incest, creampie, and masturbation themes.