“In 2010, Takeshi Kuwabara was sentenced for the murder of his lover, Rie Isohata. What captured the world’s imagination was not the tragedy itself, but the fact that Kuwabara was a wakaresaseya – a professional hired by Isohata’s husband to break up their marriage.
The wakaresaseya agent Kuwabara, who was married with children himself, engineered a meeting with Isohata in a supermarket. He claimed to be a single IT worker, which his nerdy, bespectacled appearance may have helped with. The two began an affair, which eventually led to a genuine relationship. Meanwhile, a colleague of Kuwabara’s photographed them in a love hotel, and Isohata’s husband used these photographs as evidence for a divorce. (Such evidence is needed when a Japanese divorce is contested.)” :: https://www.bbc.com/worklife/article/20200731-the-saboteurs-you-can-hire-to-end-your-relationship