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 when their parents went on a trip they won in a raffle, only two people were left at home: an otaku anime-loving brother who never leaves his room and his serious sister. The brother's dream was to make his sister dress up as his favorite characters and take pictures of her. He blackmailed his sister with her secrets, forcing her into cosplay and raping her. However, faced with his enormous penis, the sister also gradually became aroused…