ALDN-544 My brother's wife (lol) or should I say, she's only for me during the day lol Narimiya Iroha

Iroha has been married for five years. Although they have not been blessed with c**, she feels happy in her marriage with her honest husband. However, when her husband's younger brother moved in, Iroha's married life changed completely. Perhaps because he is much younger than her, he is still young and has not yet found a job, making him what they call a NEET. When her husband goes to work, he approaches Iroha and plays pranks on her. When she refuses, he starts screaming and becomes violent. Unable to talk to her husband about this, Iroha worries every day. However, realizing that she cannot continue like this, she makes up her mind and decides to confront her brother-in-law. What will the outcome be?