MIAA-159 Lewd brother-in-law rapes his sister-in-law in the rain

The brother-in-law is home alone because his wife is away. Although he is her brother-in-law, he is infatuated with his sister-in-law because she is just as alluring as her sister, and being something exotic makes it harder for him to control himself in the rain. The sister-in-law comes over to the house because she forgot to bring an umbrella, soaking wet. A loud thunderclap surprises her and she runs to hug her brother-in-law tightly, which only strengthens his determination for his incestuous desires.