STARS-139 Yume Takeda, forced by her otaku brother (a NEET with a huge dick) to cosplay and reluctantly raped, but ends up moaning from his massive cock, the plain sister

On the day my parents won a raffle and went on a trip, the only people left at home were Aniotanito’s older brother and his serious little sister. His older brother’s dream is to have his sister dress up as his favorite character and take pictures. Her older brother used her sister’s secret as a joke to coerce her into cosplay, but her little sister gradually fell in love with her big cock.