Let's Find out....

You and your sister head over to the temple, ready to speak with Garnet. When you get there, all the gems are here. "Oh! Hello, we were not expecting anyone today. Is something happening?", pearl asked, "I was expecting them. Can you 2 leave the humans and me alone?" Garnet asked, "Of course, G.," Amethyst says. They both leave into their respective rooms, leaving you and your sister with the fusion. You notice that she is much taller than you expected, even if you knew she was tall. "I assume you are the breeder and his sister, correct?", "I am, and she is. I assume you know why I am here.", "I do, and I also know what you want from ruby and sapphire. Sapphire does not want any of it, but ruby does. Before we get to that, I am here to help because my future vision will be helpful with the other girls and gems of beach city. It is weird, but I will even help you get my friends since I know why it needs to happen.", "I see. I am glad you will help us. It is really going to be needed and heavily appreciated.", "Of course. But for now, You will need to breed ruby as a start to see how your powers work that the goddess gave you, not the one you just met the first one." She said this because you had a slightly confused look on your face. As she finishes saying this, she unfuses. Ruby is already naked. You gain their information. (Gems are ageless for those who may not know and are created at their size and don't normally change it).

Name: Ruby
Alias/Nicknames: Garnet (When fused with sapphire)
Height: 4'7"
Bust: 40"
Waist: 30"
Hips: 40"
Age: about 6000
Race: Gem
Ethnicity: Homeworldian
Skin: Red
Hair: Dark Red
Shave: Clean
Favorite Food: Pizza
Favorite Color: Blue
Favorite Flower: Blue Rose
Preferred Underwear color: None, no underwear
Favorite Position: Anything under Sapphire
Fetish: Wishes to fell how it feels to be pregnant, but along with sapphire
Virginity: No, gems are unable to be virgins naturally.
Current Love Interest: Sapphire, always.

You can tell that she modified her body to be more appealing, becoming a short stack because of it.

Name: Sapphire
Alias/Nicknames: Garnet (When fused with sapphire)
Height: 4'7"
Bust: 35"
Waist: 25"
Hips: 35"
Age: about 6000
Race: Gem
Ethnicity: Homeworldian
Skin: Blue
Hair: Light Blue
Shave: Clean
Favorite Food: Ice Cream
Favorite Color: Red
Favorite Flower: Red Rose
Preferred Underwear color: None, no underwear
Favorite Position: Anything above Ruby.
Fetish: Wishes to fell how it feels to be pregnant, but along with Ruby
Virginity: No, gems are unable to be virgins naturally.
Current Love Interest: Ruby, always.

Sapphire is definitely bigger as well, but not as **** as Ruby. Sapphire sits off to the side and motions for your sister to sit with her. While she is hesitant, Grana goes to sit, slightly disappointed in not joining you. "You will have your turn, do not worry.", Sapphire tells her. Ruby leads you over to a bed up high, Steven's bed. You wonder where he is. "Steven is alive and well, should you ever wonder that. He left a while ago, and we still receive the occasional letter.". His gem side likely makes him immune to the virus, you think. Ruby sits on the bed and waves you over. Your sister and Sapphire can get a good view from below, next to the door. "Sapphire will likely join us, but for now, try to last as long as you can," Ruby whispers to you. You realize that she is already soaking wet, "Thinking about this was enough to get me ready. I don't want to wait any longer. Put it in!". YOu oblige and begin to push it in slowly. You wonder what happened to your clothes but decide not to question it when you are fucking an alien short stack from another world. "YEEEEESSSSSS," she moans as you push all the way to the base. You begin to pump slowly, "I'm not some virgin human, go faster than that!" so you do and begin to pump faster. She is incredibly tight, and you wonder how you can even fit inside her, and you eventually begin to bump something. "Ah! Yes, right there! keep going!", You realize what it is and begin to pump into it, making ruby moan louder and louder. You decide to flip her onto her legs and arms and fuck her in doggy. This only makes her moan louder. Thinking back to her favorite position, you start to pull her hair. This instantly makes her cum, barely getting the words out, she says, "Don't stop... Please!" so you continue to pound her from behind. At this point, you notice a very naked sapphire walk by. Having formed a dick, you both began to spitroast ruby (you stop pulling her hair.). She starts to squirt, liquids flying onto you, and you try to pull out, "Don't, staying will make her cum even more." You trust that sapphire likely knows better than you do since you were a virgin, not long before and never fucked ruby either. "You are close. Come to me and release in me first." she makes her dick disappear, and you remove yourself from ruby. She is **** to get it back inside, but sapphire shakes her head no. This makes her stop and almost seems to make her cum from the shaking she does for a moment. You walk to sapphire and begin to fuck her (Missionary). You are close and are only able to last a short time, "Breed me," She says it monotonously with a slight moan, and it is enough to open the flood gates as you fill her to the brim. You hear ruby moan behind as she began to rub herself. "Good girl, ruby, now you may also receive his sperm," you are ready to go and begin to fuck ruby in a breeding press. Having already cum, you cum quickly, filling her with a similar amount, overflowing with cum. Both gems sit there for a moment but begin to crawl over to each other and fuse. Garnet is now in their place, naked as well, with cum dripping from her. "This was always the plan, but we knew you wanted to fuck them first, go ahead. Breed me a third time!". YOu do as she says, and pound her. You last a while longer but release everything into her at the end. She moans the loudest out of the 3. and she lays there silent. You find your clothes neatly folded next to the stairs, and you put them on. Garnet says from above, "You can stay here for as long as you need, and even bring girls here. Try not to break anything, though. Please take a quick trip through town as well, don't worry about me. I have something to do soon, so I will be gone by the time you get back.". You get your sister, and you both head out to walk around town.