Fulfilling a fantasy (Coming soon in February) (Pixiv Fanbox)

Samantha has a boyfriend much older than her, he has a son from her first marriage, she for him is the best stepmother in the world. One day Samantha tells her boyfriend about her fantasy of having sex with him and her son. It was just a fantasy until one day ... February will be the month for this great story. Would you like to be on the list of the first with a preferential price?