Please Steal My Wife. Shoko Akiyama (2015)

Shoko Akiyama plays the role of a young and beautiful wife, Xiangzi, who is married to a middle-aged man, Tatsuo. Her husband asks his friend and subordinate, Oki, to seduce her, which leads to an affair between Xiangzi and Oki. As their relationship deepens, Tatsuo becomes increasingly excited and eager to see his wife being intimate with another man, revealing a cuckolding fetish. This setup allows for explicit scenes of adultery, as Xiangzi engages in passionate encounters with Oki, fueled by her own desires and her husband's encouragement.