Erica chooses swallow the spit kiss herself

"I want it!" Erica shout.

"What did you say, Sis?" I ask my sister, surprised.

"I am one of your girls, so I choose myself." She says, without stopping rubbing her cunt on the pillow.

"It is gross, Sis. Don't you prefer any of them to swallow it instead?" I ask her, trying to make her doubt.

"It is gross...but very hot..." She answers, pushing with **** against the pillow. "They receive your kiss like this every day...ahhh...but I haven't yet...ahhh... I want it for myself."

I kneel in front of her. She continues rubbing the pillow with her hands behind her back. She's drooling at the thought of swallowing my kiss, with her mouth wide open, so I take advantage of the opportunity to test her determination by grabbing saliva on my mouth.

She hears me, and instead of closing her mouth, she takes out her tongue and moves close to my face. I have her face a few inches from mine. It is the moment for my sister to receive her first spit kiss.

I put my mouth as close as I can, almost kissing her if her mouth wasn't wide open, but instead of doing it, I spit point blank inside of it, deep inside her throat. This is the closest I have been while spitting a girl's mouth, and yet she won't do anything to stop it. Being this powerful feels terrific!

Even knowing in advance what was going to happen doesn't prevent my sister from flinching. She instinctively moves her head back with her eyes closed and gags due to the intrusion in her mouth. But she doesn't let it go. She holds my spit by closing her mouth. And after a few seconds, she can resist the urge to spit it outside and swallow it.

"Good girl, Sis," I praise her petting her head.

"Thank you, Brother," She answers me, recovering from this new experience.

Meanwhile, my three girls had stopped moving the spitball between each other to be able to watch us. The three are looking at us with their mouths wide open while touching themselves. I can see that Holes is the one who currently keeps the spit kiss in her mouth.

I sit back on the couch and grab my sister, putting her lying with me, with her head over my knees.

"I hope you aren't choosing yourself, intending to convince me to let you cum?" I ask her, gently petting her hair.

"No, Brother! I swear! I am doing it to please you. Nothing else."

"So, you don't deserve a reward for this?"

"No. I don't deserve to cum," she insists.

"It was you who made the decision not to cum."

"I know." She agrees with me.

I signal Holes to come with us. She crawls until she was in front of my sister, holding the spit kiss in her mouth. Then, she inclines her mouth, letting the big spit fall on Erica's tongue.

"Don't swallow yet, Sis," I tell her as I also spit myself inside her.

My sister remains still over me, her mouth wide open and tongue dirty with the spit kiss. She deserves a reward for this, even if she can cum.

I gently rubbed my fingers in circles over her cunt, to put her again on the edge. While doing this, I signal Binita and Freya to come and spit-kiss my sister too.

"You deserve a reward, Sis," I whisper to her ears.

She tries to tell me no but cannot speak right now.

"You can't talk with your mouth full of kisses, so there is no way you could say no," I told her, spitting another kiss inside her.

"Don't worry, Sis"; I continue, "I can consent for you. I have decided your answer is 'Yes, I want the reward.' I know you don't want any rewards. I have taught you that girls who do things for a reward are selfish and shouldn't receive it. But the fact that you genuinely don't want anything in return is what made you deserve one".

I keep edging her while the girls and I take turns spitting to fill her mouth. I do it slowly, rubbing her, but without fingering her cunt hard like other times I have denied her.

"Don't worry, Sis. You won't cum." I whisper to my sister.

We continue doing this for over half an hour, taking turns the four of us. My sister's mouth is almost full of spit, which looks liquid and bubbly due to the amount in her. The liquid is a dim half transparent, with a color white softer than cum.

At this point, my mouth is so dry that I have stopped spitting, letting my girls continue the job. My sister is almost ready to cum, even with just this soft touch.

"You are almost ready, Sis. Do you know what a ruin is?" I ask her.

She nods, trying to tell me no.

"A ruin is similar to an edge. But instead of stopping you before the orgasm, I will stop you when you reach the orgasm."

I can see on her face that she wants to tell me she doesn't deserve to cum. But I continue, ignoring her.

"Don't worry. And edge while giving you pleasure for no more than two or three seconds. So, it will leave you as frustrated and need as an edge. It's probably even worse. You deserve this reward, Sis."

I can see how my sister is holding back her orgasm. She is about to lose it. Even with this gentle treatment, it has been too much for her to endure.

"Don't fight it, Sis," I command her.

She stops resisting, and I feel her body trembling due to the impending orgasm.

And then she does it. With her mouth full of spit, she passes the orgasm's edge.

"Swallow, Sis," I command her, stopping all the stimulation immediately.

She swallows all the spit with a big gulp. But with no stimulation over her cunt her orgasm fades away in less than two seconds. The weak amount of release disappears, leaving a sign of neediness on her face.

"Thank you, Brother," she answers, still grateful.

"You are welcome, Sis."

Freya, Binita, and Holes have remained self-absorbed, looking at us while I made my sister receive her first ruin. But unlike her, they haven't passed the edge. They have been able to surf the pleasure near the border without passing it, and at the moment I had stopped my sister's stimulation, they have stopped theirs too.

"Will you give me more ruins?" My sister asks me, intrigued.

"If you are a good girl, I could reward you with one. But you can't ask for it, understand?"

"Yes, Brother. I should please you without expecting a reward in return."

"That is right. So, I forbid you from asking for it. You can only beg me for orgasms and edges."

All that I have done with my sister has made me rock hard. I can't resist it any longer. So, I took out my cock, with my sister still over my knees.

"Is that my fault, Brother?" She asks me lustily, smelling my cock while I rub it on her face.

"It is, so you should take care of me now."

"I can't if you don't let me use my hands." She says, gesturing to her hands, still bound by my words behind her back due to my commands.

"I can use another thing," I answer, rubbing my cock on her lips.

"But the contract, Brother. I have not agreed to this," She answers back, but her slutty tone does not match her words of protest.

"I am changing the terms. I will use you without asking for your consent. If you don't say no, it means you want this, so I have the right to do it. With those changes, desire is consent, even if you don't openly express sit."

"You will stop if I say No, Brother?"

"Maybe I stop, but maybe I am too horny, and I could **** your mouth instead. Anyway, you know what they say about good girls?"

"Yes. Good girls don't say no."

With that answer, I finally press my cock inside my sister's mouth. I am finally inside one of her holes. I start moving her head over my cock, while she plays with my member with her tongue without any sign of resistance.

But then, something interrupts us.

I start hearing a piece of noisy music.

A phone? Who the hell is calling me now?

No, wait. That is not my phone. It is my sister's phone. Who is interrupting us right now?