Tsuma no haha: Bishū no amai wana

Original title: 妻の母 媚臭の甘い罠

Takashi divorced his first wife and remarried Misa, a subordinate 24 years his junior. Three months later, Misa was enjoying happy days. However, since their marriage, Takashi had been receiving numerous anonymous letters containing collages claiming that Misa was having an affair...