My girlfriend's mother's female hormones surged, and she stole my penis and inserted it into her vagina. (Okuda Saki SNOS-082)

My girlfriend, Sera, whom I've been dating recently, has a great personality and is very gentle. However, she's quite shy about sex, which leaves me feeling a little unsatisfied. One day, I was invited to Sera's house so we could study together. I assumed it would be a wonderful, happy family… but instead, I encountered a supermom! "Oh? You brought a boy? So cute~" Sera's mom seemed incredibly sexually active, like a wild beast. She instantly saw me as prey, secretly approaching my penis right under my daughter's nose. There was nowhere to escape in the house; my penis succumbed to Sera's mom's eroticism and was completely erect! This mom, always on the verge of a sexual outburst, didn't care at all even with her daughter nearby, seducing my penis—a super-erotic, big-breasted, slutty woman!!!