Sister Sylvia is a hybrid of Femboy and Homo Erectus, but with Futa characteristics. She doesn't speak and behaves like an animal, but she understands and reacts when spoken to. Her body is feminine and very beautiful, crowned by a beautiful 30 cm cock and beautiful, large breasts. She is the daughter of my mother and an Erectus bull from another ranch. Domina could have discarded her in the wild, but seeing how close my mother was to her, she decided to keep her. As she is the first hybrid born from these breeds, not much was known, so our veterinarian, Dr. Amparo, studied her thoroughly. Her docile and sociable nature stands out, but when it comes to work, she doesn't let anyone mount her; she only allows Domina or the Doctor to mount her. Although her body is that of a Futa, she cannot conceive or produce eggs like a Homo. Instead, she produces a lot of semen, which technically makes her a male. That's why they train her as a stud at the ranch. She has a very voracious sex drive,wanting to mount everyone, like my mother. I think she inherited that from her and also from her father, since Bulls Homo are very passionate. When she's satiated with sex, she's very affectionate and obedient. She has the same hair color as my mother and me, the same freckles, and beautiful white skin. Her eyes are very lively and a color mixed between light blue and hazel. She's 55 years old, which in human years would be about 18 or 19.

The day Lady Ingrid took me to meet her, her penis became erect as soon as she saw me. She began to sniff me, licking me with her beautiful, long tongue, lubricating my hole with it. At that moment, I had a spontaneous erection and began to release precum (which Lady Ingrid collected in a container for later use). She took me from behind and made me get on all fours. I assumed the passive position, raising my buttocks. She approached and began to kiss and lick my back. She moved closer to my mouth and kissed me. It was beautiful to feel her soft tongue playing with mine. Immediately, she grabbed my hair and pulled her mouth away from mine. Then she transformed: her pupils dilated, and she opened her mouth, revealing perfect fangs. Her expression was fierce, but it excited me. Without giving me time to react, she penetrated me. I felt my sphincter tearing as her penis swelled deeper and deeper inside me. ...and I loved it...Lady Ingrid took my cock, put another container on it, and started masturbating me while caressing us both...then Sylvia, now completely on top of me like a beast, started pumping...I've rarely felt so much power...while she was ravaging me, she bit the back of my neck, which made me release more and more semen while my sister kept coming inside me again and again...at one point my legs and arms couldn't take it anymore and I collapsed...she continued ...When I woke up, I was in her arms, and she put my mouth on her breasts. I was thirsty and started suckling her milk. Her behavior had changed; she was no longer that animal in heat who had given me one of the best fucks of my short life. Now she was behaving like a very loving older sister. When I looked at Lady Ingrid, she had several containers full of my semen. She smiled and said to me, "Today was an excellent harvest. Your sister accepted you and loves you very much. It was beautiful to see you together. Now she's going to mark you with her scent. It's her way of thanking you and telling you that you're her brother and part of her pack." Then Lady Ingrid looked at her and said, "Sylvia, I have to take your brother. I'll bring him back tomorrow, or he'll come on his own. Now you have to mark him with your scent. Then Lady Nora will come to milk your tits and your cock, okay, my good girl?" She kissed her while caressing her, and my sister smiled and nodded. Then I gently settled myself on the straw in the box and he got his cock erect again... he masturbated in a few moments and bathed me with a brief but energetic discharge of semen while he groaned with pleasure... then he started urinating all over my body... I began to lick myself clean and enjoy the beautiful mixture while Lady Ingrid also licked me. "Hey! Don't be greedy! I want some too!" He put the leash on me and said: "Since you did such a great job today and gave us so much precum and semen, I'm going to reward you... you're going to bathe with me and after dinner you'll sleep with me in my room... but before you go to sleep... surprise... we'll play girl games!!! ...you'll be my doll and I'll dress you... you have my permission to speak." "Yes, my lady! I'm very grateful that you want to play with me and sleep with me." To be continued ...