Erotic novel: My Son's Wife - The Lewd Secret of a Big-Breasted Gal Wife ~ Hamasaki Mao

Her husband is busy with work and is unable to find Mao's partner. Mao, a female busty gal wife, provokes her stepfather, who lives with her, and enjoys her every day. One day, when Mao starts to move when her husband contacts her that she will be late for work. Taking advantage of this provocation, her stepfather becomes obsessed with her body and seeks Mao's body like she does every day. As a result of continuing her relationship with her husband and stepfather, her two men, she finally finds a change in Mao's body... What changes did Mao really take to her body...?