Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/13770513.
  Rating:
      Explicit
  Archive Warning:
      Underage
  Category:
      F/M, M/M, Multi
  Fandom:
      僕のヒーローアカデミア_|_Boku_no_Hero_Academia_|_My_Hero_Academia
  Relationship:
      Todoroki_Enji_|_Endeavor/Todoroki_Shouto, Todoroki_Fuyumi_/_Todoroki
      Shouto, Todoroki_Enji_|_Endeavor/Todoroki_Fuyumi
  Character:
      Todoroki_Shouto, Todoroki_Enji_|_Endeavor, Todoroki_Fuyumi
  Additional Tags:
      Father/Son_Incest, Father/Daughter_Incest, Sibling_Incest, Drugs, Mind
      Manipulation, Hypnotism, Underage_Sex, Daddy_Kink, Dirty_Talk, Oral_Sex,
      Nipple_Play, Somnophilia, Genderfuck
  Stats:
      Published: 2018-02-23 Updated: 2018-03-22 Chapters: 4/? Words: 4640
****** A Day in the Life of the Todoroki's ******
by BadDecisionBay
Summary
     Endeavor discovers a way to tame his difficult children. The power
     goes to his head. Things escalate rapidly.
     Or a series of snapshots in the Todoroki household after Enji's
     subdued his children.
Notes
     Please read the warnings carefully. If this is not your sin bin,
     please leave.
***** Year 0 Day 1 *****
Chapter Notes
     Please read the warnings carefully. If this is not your sin bin,
     please leave.
See the end of the chapter for more notes
It was so easy to drug his children into obedience. The day his wife was sent
away, Enji started them on a potent drug. Enji could barely believe how
effective it was. But here they are now, his problem children. They're hanging
on his every word, gaze as loving as they used to look at that woman.
Since he told them to forget about her, they don’t remember her at all. Good,
he can work with this. His children need to understand that he is the only
thing they need to listen to listen. They need to know that no disobedience
will be tolerated.
"You will not think about disobeying me. The thing you want most in the world
is my approval and praise."
They both give enthusiastic nods. A start, at least. Neither of them would be
so accepting without the hypnotic influence of the drug, he's certain. However,
it is one thing to agree to something like that and something very different to
follow through. "If you understand, strip."
Both of them take their clothes off as quickly as they can. There's nothing
sexy in the way they did it, but that's fine. This is a test of limits and it
seems like there are none. His cock twitches in his pants at the degree of
power he wields over them.
He has plenty of time to train them into becoming exactly what he wants.
Obedient children who understand their place in the family. Children who simply
listen to him without throwing a fit or crying. Yes, they’ll be much easier to
handle now.
"You will refer to me Daddy at all times. Understand?"
They both nod and chime together, "Yes, Daddy."
That's much better than Shouto's insolent  that guy . Fuyumi's always been a
good girl who referred to him as Father, but the childishness of Daddy is much
more appealing.
"At all times, you will want my cock and my cum. You will do anything I ask for
the privilege of being able to worship at the altar of my cock. Do you
understand?" With those orders given, Enji unzips his cock. Already, it's half
hard. It only takes a few more strokes to reach its full length and girth. His
cock is bigger than either of his children’s mouths, there’s no way either one
of them could fit the whole thing inside. But the thrill of being his
children’s first everything is already making him leak. Today will be their
first blowjob.
"Yes, Daddy."
The smile on their father's face could only be described as predatory as his
children look up at his cock like it's the best present in the world. That
woman selling hypnosis drugs was the real deal. He’s so far in his own
skepticism is fading away. The effects last for as long as the target continues
to ingest the potion at least once a month. It should be easy to keep his
children under control with that.
"Now, beg to suck my cock."
It's strange, but Shouto seems to know what he wants to say first. His stubborn
boy really must have been waiting for just the right time to submit. "Daddy!
Daddy, please! Please, Daddy, I want to suck on Daddy's cock. I wanna be a good
boy for Daddy."
Enji's dick twitches at his difficult son debasing himself so easily at the
sight of Daddy's cock. Shouto doesn't move forward, but he hasn't been told
that he's allowed to just yet. Waiting for the signal like a good boy. Instead,
Shouto opens his mouth and sticks his tongue out, showing just how willing he
is to take it.
Fuyumi doesn't want to be outdone though, and as the older child, she sinks to
her knees and crawls forward, swinging her body as seductively as she can.
"Daddy- Daddy, I'll treat your cock so right, Daddy. I need to have Daddy's
cock in my mouth. Daddy, please, I need your cock in me right now!"
"Come forward, Fuyumi, Shouto. Today you've both earned the right to worship my
cock."
Both their eyes sparkle in delight. The last time Enji saw Shouto so excited
for anything was when he caught an interview with All Might on TV. Enji's
looking forward to fucking anything except pleasing his father out of him.
Fuyumi doesn't get up, and instead crawls her way over to her father's cock,
licking it from base to tip. Shouto watches her for a moment, studying her
movement before following, his lips slowly taking Enji's cocktip into his
mouth.
"Mind your teeth, boy."
Shouto gives him a garbled noise that could be taken as "Yes, Daddy." His son's
mouth is so small and the best he can manage is a few inches before it reaches
the back of his throat. Luckily for him, Fuyumi picks up the slack, licking
what her brother can't fit in his mouth. Shouto sucks so happily on his cock,
it's almost like he's been given a lollipop. With his children so excited and
amazingly obedient, his reaches his climax faster than he would have imagined.
"Open your mouths. This is the first time you're going to taste my cum." Enji
takes a step back to pull his cock out of his children's grasp. He starts
pumping it, splattering their faces with white, even as he aims for their
waiting mouths. It's been so long since he's been able to let loose like this.
It is only made better by his children moaning out in pleasure as Daddy’s cum
hits their waiting tongues.
Shouto’s cock is leaking pre and Fuyumi’s thighs are all wet with anticipation.
They cannot wait for him to use them again.
He's going to get used to this.
 
Chapter End Notes
     You can reach me @BadDecisionBay on Twitter. Feel free to send
     requests!
***** Year 0 Day 5 *****
Chapter Summary
     Five days later.
Chapter Notes
See the end of the chapter for notes
After Fuyumi’s gone to school with her pussy full of Enji’s cum, Shouto’s still
in bed with him. His son wears a top that doesn’t cover anything at all, but
with big English block letters spelling out CUMSLUT. He lost the competition to
take Enji’s cock yesterday, and these clothes are his punishment for now. Soon
enough it’ll be something Shouto enjoys doing.
It really is impressive how perfectly those drugs worked. It has been five days
since his children's first dose of it, and they are both desperate for his
praise. They have not shown a single hint of disrespect or argumentative
behavior. Anything he tells them, they will do in a heartbeat.
Enji's certain whatever that woman give him was the real deal. There's no
reason to doubt her drugs anymore. He would gladly continue to pay her for his
children being so compliant. It makes for a pleasant change of pace over their
usual attitudes towards him. Having them listen to him instead of fighting him
on every little thing makes his cock start getting hard all over again, despite
the fact he came in his daughter only a few minutes ago.
If he remembers correctly, she had several other potions, maybe there’s
something to make Shouto more sensitive once he’s gotten used to taking cock.
While it’s a nice thought, it will take some time for Shouto to get there.
Right now, Shouto is simply too small to take Enji’s cock in his ass.
Shouto looks at him with adoring eyes these days, even as they drift down to
his dick. More than once, Enji’s seen his son lick his lips in anticipation
during a sparring session. It’s cute how much he needs Daddy’s cock in his
mouth. Someday it will be all Shouto can think about, only Enji’s praise and
cock will matter to him. That will be a long road too, but at least Shouto
listens to him instead of fighting him on every little thing.
Shouto will become his devoted masterpiece of a hero and the family slut. But
Enji has to train that into his child too. Before the drugs Shouto didn’t even
think about sex. There is so much work he has to do on both his children, but
the end result will certainly be worth it.
He drops his bare cock against Shouto’s face, rubbing it over his soft cheek.
Fuyumi’s pussy and his own cum are still all over it. The ability to claim his
children this way without any consequences is thrilling. He knows very well
that Shouto would love to wake up to his cock. But right now? This is him
enjoying the freedom to do anything he wants to his son. Shouto’s only response
will be to thank him for using him this way.
Sex must become second nature to his son. He should fall onto his knees to get
a taste of Daddy’s cock or Fuyumi’s pussy. His most stubborn child will become
the pliable submissive Enji’s always wanted. For that to happen, Shouto should
be getting used to slutty clothing at all times. There’s no need for clothes
that aren’t degrading or humiliating.
Finally, he’s ready to push his cock into Shouto’s half open mouth. Just the
tip of his cock is already stretching out Shouto’s mouth so much. Shouto moans
as the intrusion wakes him up. Shouto’s mismatched eyes look at him
worshipfully. Instead of trying to pull away, he starts sucking and moving his
head, desperate for Enji’s cock to fill up his entire mouth.
“That’s right, Shouto. You’re Daddy’s little cockslut, aren’t you?” Shouto’s
mouth is far too full to answer, but he is still compelled to try. Something
that might be a yes, Daddy spills out of his son but it is too garbled to tell.
Shouto’s little cock gives away just how much he’s loving this, hard and
leaking pre onto the blankets.
“Whatever I do and say is always right.” Shouto’s eyes close as he nods in
agreement like the good obedient boy he is.
Enji’s actions are always the correct ones, no matter what he does. With that
settled, Enji starts fucking Shouto’s mouth in earnest. His son chokes on his
cock, his eyes are wide and filled with tears, but he doesn’t make a single
attempt to back off of his father’s huge cock. Enji’s words have so much power
over him. Whatever Daddy says, Shouto obeys.
“You love this, boy. You love being used as Daddy’s cocksleeve and you love
Daddy’s cum.” A moan of agreement and Shouto does his best to match his
father’s relentless pace. Even at his best, his mouth isn’t big enough for a
monster of a cock like his father’s. Drool trails out of his mouth with the
strain of trying to take the whole thing in his small mouth. The desire for his
father’s cum is overwhelming his sense of reason.
At this pace, it doesn’t take very long for Enji to cum in Shouto. He gags and
struggles with it, but he still tries to swallow, even with Enji’s cock still
in his mouth. So much cum spills out of his mouth. Enji allows Shouto to suckle
on his cock for a few more seconds before pulling it out. Shouto’s hands reach
up to wipe away the mess.
“You’re not allowed to wipe it away, Shouto. You love being a mess like this.
You love having the proof of what you’ve done all over your mouth.” Enji’s cock
twitches as Shouto nods in agreement. Shouto even leans forward, pressing a
kissa against his tip and smiling up at him.
Such an act of deference without Enji even ordering it! Enji reaches down to
run his fingers through Shouto’s hair for a moment. “That’s a good boy,
Shouto.” Immediately, Shouto moans out in pleasure from the praise.
Shouto will be amazing as long as he follows his father’s orders. Already, he
is acting the way Enji wants him to without direct orders.
He takes a look at his son, with his face covered in cum and pussy, a shirt
that stops well before his nipples and his loving gaze. This never would have
happened without those drugs, and still Enji needs to push it. He needs to see
if there are truly any limits to this. Already, Shouto’s sucked on his cock,
begged for it, licked his own sister’s pussy in an attempt to get his father’s
cock inside of his mouth.
“Shouto.”
“Yes, Daddy?”
The thrill of hearing that from Shouto is too good. His spent dick twitches
again at the sound of it. “You love wearing nothing at home. The second you
come home you will strip. Unless I say otherwise, you will stay completely nude
while you are home.”
His son looks up at him and gives a slow nod, as if he is processing that new
knowledge about the house rules. This is not much of a stretch, since whenever
Shouto is training his quirk, he must also be nude for Enji to properly observe
his form. “Yes, Daddy. I love being naked at home.”
Perfect. Enji reaches down and starts thumbing Shouto’s nipples, watching as
they grow harder beneath his touch. His son must start to view himself as a sex
object. He needs to understand that his body is perfectly made to pleasure his
family.
“When you are home and not being taught, you must play with your nipples-” he
gives them a pinch and Shouto reacts with a delighted gasp. “You’re going to
play with them until you can come from them alone.” Enji pulls his hands away
and watches as Shouto’s hands quickly replace them, rubbing them and pinching
on them.
This time, Shouto’s “Yes, Daddy,” is punctuated by soft moans as he gets used
to constantly playing with himself. 
Chapter End Notes
     As always you can find me @BadDecisionBay on Twitter.
***** Year 0, Day 6X(?) *****
Chapter Notes
See the end of the chapter for notes
Shouto completely lost track of how long Daddy’s been training him. Before it
was just his body and his quirk, but now it’s everything about his life. He
loves it, he loves submitting so completely. Nothing else feels so satisfying.
Daddy controls what he wears, what he eats and what he watches.
All his old clothes were thrown out. They didn’t fit what Daddy is molding him
into. His body needs to be shown off at all times. the new clothes cling
tightly. The skirts and shorts show off the soft curve of his ass. His shirts
are so thin and clingy they show the constant stiffness of his nipples. It’s
hard even wearing shirts that cover them, even the faintest touch has him
leaking pre. They’re much more sensitive than he thought they could be, but
that’s because he’s been training them just the way Daddy wants.
But Daddy said he has to keep covered when they're outside. He isn't slutty
enough to be put on display yet. Right now he’s still being trained,  that’s
why he needs to stay naked around the house. Being nude just feels much more
comfortable, and Daddy praises him whenever Shouto’s at home and playing with
his body. The praise washes over him like a balm and all he wants is more of
it. He makes it a point to play with himself whenever his father is home.
Both he and Fuyumi are only allowed to watch what Daddy deems acceptable.
They've watched so many movies together as a family. Pretty boys and pretty
girls stripping slowly and sensually for big, handsome men with huge cocks.
Everytime Shouto watches them take it in their tight asses, his own twitches in
jealousy. He can't wait until he can finally take Daddy's cock and be called a
proper slut. Then he’ll be allowed to go outside naked and he’ll never have to
bother with clothes again.
Daddy’s been so nice to them both lately, gifting them both dildos perfectly
shaped like his cock. Shouto even got special treatment by getting a set of
anal plugs. The smallest he can insert easily and only growing larger from
there. He’s still too small to properly worship cock the way that Fuyumi does.
The smallest one feels strange inside of him, but this is the only way he’ll be
able to take cock the way he’s supposed to. Right now, al he can do is suckle
and get face fucked. He doesn’t hate it, or anything like that, but he does
know his body isn’t perfect yet. The plugs are a constant reminder of how much
progress he needs to make.
It’s already hard to stop himself from staring at the bulge in Daddy’s pants
whenever they’re sparring. Daddy’s cock is so tempting but he only earns it
during training when he’s made enough progress on his quirk or his body. He
hears the way Fuyumi screamed in pleasure, how Daddy’s cock stretched out her
pussy, how hot Daddy’s cum felt inside of her.
There’s a white hot flame of jealousy sparking inside his chest. Shouto wishes
his body would get trained faster, that his ass could take cock in the same
easy way Fuyumi’s pussy does. It’s just not fair, Daddy loves him just as much
as Fuyumi. But he has to wait so much longer before he can take Daddy’s cock
the way he’s supposed to. Whenever he watches Fuyumi get fucked properly, he
wishes he had a pussy instead of a little boy dick. Daddy would probably fuck
him now if he had one.
Daddy has to go out of town to deal with a villain attack. He pet both of their
heads during an oral worship session before he left and told them to be good.
His orders were that Shouto had to listen to Fuyumi, she's the one in charge.
Shouto has to listen to her just like he listens to Daddy. They both still have
daily fuck practice. Shouto gets to deepthroat his dildo and Fuyumi must ride
hers each day.
As soon as she comes home from school she strips off all her clothes and folds
them. There's a neat pile of them by the front door. The only clothes they’re
allowed to wear at home are the ones that Daddy approves.
She grabs her dildo, spreading her legs apart on the couch. Slowly she pushes
it into her empty pussy, giving a satisfied sigh as Shouto watches her. The
rhythm she sets is slow and teasing, Daddy would never let her get away with
that if she was riding him. But she’s looking at Shouto with a smirk.
They both miss Daddy's cock and being filled is so much better than being
empty. The plug inside of him might stretch him out, but it’s not as fulfilling
as that dildo looks. Jealousy sparks up again and he does his best to smother
it, watching Fuyumi.
Once it's completely covered in her cum it's shoved into Shouto's unoccupied
mouth. It goes down so much easier than the last time she tried. He’s been
practicing his deepthroating. Daddy praised him for that but he wishes he could
be praised for his ass instead.
“You're becoming so slutty, Shouto!” The delight in her tone perfectly echoes
the way Daddy praises him. His cock leaks pre without a single touch.
“You love big cocks like this. I know you're always thinking about them. The
way they feel on your tongue, the way they fill up your tiny mouth. Do you
fantasize about taking them up your ass?” She pauses to grope his soft, plush
ass cheeks the same way Daddy does. He can't hold back his encouraging moan.
“I've seen the way you look at Daddy and me. You want him to fuck your virgin
hole.” This time she pries out his plug to slam it right back in.
The words combined with the action have him cumming all over the sheets.
She’s right.
He doesn’t recognize the way his head is rearranging itself to make every word
Fuyumi speaks true. He’s too far gone to realize little things like that. But
he starts to miss the way his father’s cock feels in his mouth, the taste of
it, the way it would leak out pre like it was preparing him for more.
“I didn’t say you could cum.” Fuyumi frowns at him and spanks each of his
asscheeks. He knows he deserves it. He knows better.
He moans around the dildo, the taste of his sister permeates through his mouth.
She rips it out of him and rests it against his face for a moment before
stuffing it back into her pussy. That’s right, he’s just there to lubricate it
for her.
“Lick up your mess,” her eyes are hungry as she watches him.
Without a second thought he shifts down on the bed. His mess is right in front
of his eyes. A pang of shame rushes through him, he should know better than to
revel in his own pleasure when he wasn’t told to. It should be humiliating,
licking up his cum like this. But instead he only feels himself getting
excited. This is where he’s supposed to be. This is what he’s supposed to  do .
He does his best to lick it all up, but most of the mess is spread over his
face instead. There's nothing better than having cum on his face. Daddy says it
helps reinforce his place in the house. Shouto is the bottom bitch, he needs to
remember that his body only exists for others pleasure. The cum let's anybody
who sees him know he's a slut and exactly what he’s for. He’s Daddy’s cumslut,
he’s Daddy’s cocksleeve, he’s  Daddy’s . That’s all that really matters.
But Daddy isn’t here right now, instead Fuyumi is the head of the household.
His body serves her, he has to do whatever she says. Whatever she says is right
and true because  she’s  the one saying it. Shouto doesn’t have a reason to
question his family.
After all, they want the best for him.
Chapter End Notes
     As always I'm on Twitter @BadDecisionBay.
***** Year 0 Day ?? *****
Chapter Notes
     Shorter chapter this time around, but hopefully just as filthy as
     before.
Shouto's on all fours with his ass high on the air. It's early in the morning,
so of course Shouto isn't wearing any clothes. Last night he had finally gotten
the biggest I anal plug stuffed into his hole. His father's big hands cup his
ass cheeks to spread them apart, surveying the work. Shouto can't help moaning
for more.
Daddy smacks his ass with an open hand. “I didn't say you were allowed to
speak, slut.” With that he starts to play with the plug, moving it in and out,
wiggling it to make certain that Shouto's ass is ready for his monster cock.
Shouto does his best to keep himself silent just the way Daddy wants him.It’s
so hard to do as he’s told when Daddy is finally going to fuck him for real.
He’ll be the fucktoy he was meant to be this whole time.
“I've seen the way you look at Fuyumi when she's on my cock. You're jealous.”
That same burn of shame and arousal heats up Shouto's body. “You want to be a
girl, just like her. You want a pussy instead of your cock and real tits for me
to play with. You want to be Daddy's slutty little girl.”
Just as always, Shouto's thoughts rearrange themselves to align with what his
father says. He's always wanted a pussy for his Daddy to fuck. A wet, inviting
pussy that can take big cocks just like his ass. Tits bigger than his head so
everybody who ever looks at him knows he's a sex toy without a second thought.
He wants everybody to touch him without asking permission. His body should say
fuck me and I'll say thank you  without him ever saying a word.
Shouto rocks his hips and whimpers for more. Daddy finally pulls the plug out
and it's unbearable. There was always something in his ass, stretching him out.
He never wants to feel empty again.
Before he can beg, Daddy's huge cock penetrates his virgin ass. He's being
teased. Just the very tip is inside him and big hands are stopping him from
pushing back for more.
“Say what you want, girl.” Daddy growls into his ear. He feels his dick harden,
he loves this. He loves when Daddy calls him a girl. His body was meant to take
cock just like one.
“I wanna feel your cock, Daddy! I wanna feel your cum in my ass!” A hit to his
ass check.
“It's your ass pussy, slut. You're only allowed to call it that.”
He's right, of course, because Daddy is always right about everything. He
doesn't have an ass, he has an ass pussy. His ass pussy is what's begging for
Daddy's cock and cum. That's what always needs to be filled with something, a
cock, a plug, a dildo, cum. Anything is better than being an empty little slut.
“My ass pussy needs your cock, Daddy. Please, please, please. I wanna feel your
cum where it's supposed to be.”
Finally, finally he's earned his father's cock. It's all the way inside of him
with a single stroke. Shouto screams in pleasure, babbling about how perfect
Daddy's cock is. It's so much better than the plugs and the dildos. It's warm
and filling, pulsing against his inner walls and adding more lube to his slick
ass pussy. It his just the right spot and he can't help himself. He cums first.
Another slap to his ass cheek. “Sluts like you aren't supposed to cum until
they've earned it.” His father's hand wraps around his tiny dick. He feels even
smaller like this. Daddy's hands are so much bigger than his little girl cock.
“Clitties like this aren't meant to cum until I say so, Shouto.”
“I- I'm sorry, Daddy! I didn't mean it! I just want your cum and cock so much,
Daddy! I love you so much.” There are tears in his eyes, he can feel them. He
might never get Daddy's cock again if he isn't good this first time. The
thought of it makes him say it. “I don't ever want cum without Daddy's
permission! Please, Daddy! Keep fucking my ass pussy!”
Daddy pulls out before fucking him roughly, without a single thought spared for
how his son might feel. Not that it matters. Shouto's been trained for this. As
long as there's something in his ass hell be a happy little slut.
“That's right, Shouto. You  can't  cum until you ask for my permission. You
need me to tell you when you're allowed to cum. And you'll cum  whenever  and
wherever  I tell you.”
“Yes, Daddy!” He answers without a thought.
With that settled, Enji continues his assault on Shouto's stretched ass pussy,
blowing load after load of hot cum into his youngest son until he can't cum
again.
Shouto's collapses onto their bed with Daddy's cock still inside him, keeping
any of the cum from spilling out.
“You're Daddy's little cum slut, Shouto. You love this.” His big hands stroke
down Shouto's back before squeezing the swell of his ass. Slowly he slips
himself out and stuffs Shouto with his ass plug. Some of the cum leaks out, but
nothing's as big as Enji.
Shouto gives a sigh of contentment and a smile. “I love this, Daddy. I love
you.”
“Good girl.”
Enji rolls him over and puts something cool around his little dick before it
locks into place. Shouto looks down at himself and finds his dick in a metal
cage. 
"You want to be a girl? You're only going to cum how girls do. You're not
allowed to play with your cock, Shouto. If you're lucky enough somebody wants
to play with that pathetic thing, you'll ask them to play with your ass pussy
instead." 
In the post orgasmic haze, all Shouto can do is nod as the words get lodged
inside of him. Daddy would never lie, and he only wants the best for him.
There's no reason to doubt anything he says. 
"That's too small to be called a cock. It's your clitty from now on." 
"Yes, Daddy." 
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