Nagisa Shiraishi is a college student who also works as a cosplay idol. She's the girlfriend of my younger brother. One day, Nagisa came to visit our house and showed off her erotic cosplay. Just then, my older brother Seiiichi, a lawyer, returned home. Nagisa instinctively felt his special gaze and realized he liked big breasts. One day, she accidentally met Seiiichi on the street and rubbed her proud breasts against his elbow as they walked. The serious Seiiichi's perverted heart blossomed, and he invited Nagisa to his room, where she made him weak in the knees with her breasts and internal ejaculation. Nagisa, who loves H, secretly engages in fellatio and internal ejaculation sex with her brother-in-law Seiiichi behind her younger brother's back.
