Dangerous Changes: Kaede Edition

Several years after the nightmare of his ex-wife Aya being taken away before his eyes, Naoto and Kaede have been living a quiet and modest married life, supporting each other both mentally and physically. There is no dissatisfaction... except for one thing. Erectile dysfunction.
Since the nightmare of a few years ago, Naoto has been unable to achieve an erection. He not only wants to express it in words but also physically connect with Kaede. However, one day, he suddenly reacts. A fetish for being cuckolded... An extraordinary situation begins where Kaede is taken by another man. And the appearance of the man who took Naoto's ex-wife, "Shimoyama." What will be the future of this couple...?​