Mother-in-law rearing thus I became my son's slave

In the future, I will be married to my husband with a child for 5 years. He had a good relationship with his son-in-law. One day, her son catches her masturbating while calling her boyfriend. From the content of the conversation, the son learns that this marriage is for wealth, and threatens Mirai, demanding a physical relationship. Following the blowjob, my son forces me to have sex. Furthermore, her future body is being toyed with by her son's demands, which become more extreme day by day, such as butt jobs and night crawls.