I broke my otaku stepson's sex doll and turned it into a substitute for my wife's body. (Yuka Mizuno ROE-356)

My husband and I fell in love at first sight and got married. However, our life suddenly changed from just the two of us to living with my husband's son, Kenta. He's an adult but doesn't work, and he keeps staring at my body—frankly, it's a bit creepy. But what's most frightening is his cherished sex doll… I witnessed him having sex with the doll, named "Sayaka," every night. Although I talked to my husband about it, I didn't get any help. One day, while Kenta was out, I was cleaning his messy room and accidentally broke the doll… And then, to make matters worse, Kenta, witnessing this, took out his grief and anger on me…