(Bakugo's POV)
I wake up and see Momo sleeping in the bed next to mine, along with her younger sister Jirou. When i come to visit her it's always like this: me in the single bed and the two of them in the double bed.
The Yaoyorozu family is rich but wants to teach their daughters humility, so they make them sleep in the same bed and in the same room. This has made Momo submissive since forever.
At the same time, they make me sleep with their daughters to show that they trust me. They are a naive family.
As soon as i wake up, i realize i'm horny. Obviously it's all Momo's fault: she didn't manage to get all the cum out of my balls with her blowjob before dinner.
I try to go back to sleep but the erection between my legs is too hard, so there's no other choice: the busty girl will have to endure.
I reach out my arm towards the cow and shake her until she wakes up:
"Come" i say, lifting the sheet to signal her to get into my bed.
That cow in human form looks at me with pleading eyes and says "Can't we do it in the morning? I'm very tired."
I look at her with fiery eyes: "Will you stop being so selfish? I have my needs too! Don't just think about yourself."
She mumbles an apology and gets out of her bed to get into mine: i must say i've trained her really well. My busty girl knows very well that either she satisfies me or she'll be punished (and then i'll obviously be justified in cheating on her).
On the other hand, it's obvious that this is the case: what's the point of getting engaged if you don't get satisfied every time you want to? It would be like buying a restaurant but not being able to eat there.
Momo is wearing only cotton shorts and a t-shirt: her huge breasts and gigantic hips are perfectly visible as she gets into my bed and whispers:
"I'm sorry."
"You should be thankful that i'm too nice and that i like your body too much. Now shut up while i use it" i say as i grab her two firm marble buttocks and start sucking her big nipples in the center of those huge tits.
The busty slut starts panting. She acts like a good girl but she's chronically horny, so i feel no guilt about brutally taking my frustrations out on her.
I pull down her shorts and notice she's not wearing any panties. I can see her shaved vagina on display.
"Stop it, my sister might hear us" says the shameless girl.
This time my slap hits her face really hard and she mumbles an apology.
"You know you have to submit to mating whenever i feel like it. It's your fault: you didn't let me get all the cum out of my balls before dinner."
She nods and takes off my boxers: as soon as she sees my cock, she sighs like the animal in heat that she is. She grabs it hard and starts jerking me off.
Momo can't see what's going on (what i notice is coming up behind her) but her sister Jirou has woken up and notices what we're doing. All i need is a stern look to make her turn away: Jirou has learned the hard way not to bother us.
When my cock gets incredibly hard, i get on top of Momo.
"But it'll hurt without foreplay!" says the busty girl.
"I don't feel like giving you foreplay right now, i just want to receive it. Shut up and take it, if you actually love me."
The stupid busty girl's vagina is now tight and not very wet, a sign that she's pretty tired and actually needs foreplay: it's just her problem. Momo's vagina is one of the best meat toilet i've ever encountered, she has no right to deny whenever i need relief.
The busted girl just has to grit her teeth and endure it. With even more momentum i move my pelvis, drilling into her vagina as if my cock were an industrial piston.
My cock struggles a little to get in, so i push even harder while Momo endures and holds on. Slowly my shaft enters and (even though my girlfriend's face is full of pain) she hugs me and prepares to receive the entire gigantic mass of my rod, entering her without respect.
The night of my personal cow is still very long: Momo will know no mercy from me.