ZMEN-072 My sister-in-law, a female student, probably doesn't see me as a man, so I was defenseless, so I couldn't resist and fucked her...

My parents remarried and a stepchild, a female student, came to our house. - She's a bit sassy and cute, and she walks around the house in her school uniform and black pantyhose, so I can't help but worry about her because I grew up in a male household and have no immunity to girls. - One day, I was alone with my sister-in-law...