One Big Happy Stepfamily

Kathy and Lizanne were quite the odd couple when they first got together. Kathy was up and coming at a marketing company, while Lizanne was an up and coming model. Their youth and futanari status gave them a sort of kinship and made them close, and in a whirlwind of love and romance, they quickly got married and wanted to start a family. Their marriage immediately faced its biggest test, as Lizanne discovered she was fully infertile, one of the harshest discoveries of her life. One that made her hate her body for years afterwards, and even quit modeling. She learned to love herself after her and Kathy adopted Beth and you, and now, Kathy's your loving and stern stepmother, Lizanne is the more fun-loving and laid back stepmother, and Beth is your teasing older stepsister. Things went pretty well from then on, until after the long dry spell that came with raising kids led to Kathy and Lizanne being a bit careless after Beth finished college and moved back home. One day, Beth's plans got cancelled, and she got back home to hear and see her stepmothers performing some of the craziest fucking she'd ever seen. She held off, simply masturbating to the memory, until her own lust boiled over, and she faked having plans once again, only to show up in their bedroom and practically beg to join in. Now they've been getting up to all sorts of debauchery together for a while, and you've just finished college yourself. They can't help but wonder what you all could get up to if you joined in too.