Even if the president of the business partner was taken down by his wife in "former bullying", I couldn't resist. Ria Kashii

Ria Kashii is a devoted wife whose husband, Takumi, has gotten into trouble with his boss, Umeda-kun, due to a significant mistake at work. Umeda-kun, holding power over their fate, engages in a sexual affair with Ria, exploiting her devotion to her husband. As the story unfolds, it becomes clear that Umeda-kun's intentions involve cuckolding Takumi, emphasizing the cheating wife and cuckold themes, where Ria's role as a faithful spouse is compromised for the sake of her husband's career and their financial stability.