The 2-hour movie "Incestuous Sister Comes to Brother's Room to Play" includes 3 segments but all have the same content: - The younger sister comes home from school and hates visiting her brother's room to play with (because she is older, so The older brother moved out to his own room to practice living alone, taking care of his best friend). Even though they are both at the age of love in bed, the younger sister seems to still be very comfortable with her brother. She constantly exposes her underwear and dresses sexy in front of his eyes, of course his brother. The other boy was unbearably horny, but he was still determined not to do anything dirty to his beloved sister even though his son was protesting. And then, the incest detonator did not come from the older brother, but it came from the younger sister. She herself detonated the bomb against morality - Fucking with her own brother.