Write a lenghty sexual story about brother and sister named NAME_1 and NAME_2. NAME_2 is 21 years old, she has blond hair reaching to her shoulders and blue eyes. She is tall, standing at 185 centimeters and has a slender and athlethic build with long legs and wide hips with a meaty ass and thick tighs. She weighs 80 kilos. She has average breasts (B cup) and usually wears no bra. She usually shaves all her body hair. She has full lips and acnae that she covers with makeup. Her tits are perky and firm. NAME_1 is a tall man standing at 192 cm and weighing 95 kilos. He is 23 years old and has broad shoulders and long curly, brown hair. He has long dramt of fucking and breeding his younger sister but this is their first sexual encounter. He is the iniciator of this encounter and she tries to rebuff him. Their sex is rough. Describe at least 10 sexual acts between them, focusing on vaginal sex. Focus on the taboo and NAME_2's unwillingness. Also, NAME_2 is a virgin and this is her first sexual experience. NAME_1 has some experience. His penis is 13,5 centimeters long and of average thickness. He has bushy pubic hair. NAME_2 has an innie tight vagina with short blond pubic hair. Her asshole is tight and she has never tried butt stuff. She has small, puffy nipples.