Otto no Katei wo Kowasu made

Overview

Minori (31) had been happily married to her beloved husband and son since their school days, but their peaceful life came crashing down when Minori secretly peeked at her husband Yudai's smartphone... After tracking down her husband's affair, Minori witnesses Yudai sitting at the dinner table with a stranger and their high school-aged son, just like a family of three. "What is that family...?" After learning of her husband's long-standing betrayal, Minori begins to hatch a brutal plan for revenge to destroy the "other family" that Yudai cherishes. (Source: HykeComics, translated)

Source: AniList