This muse is a independent version of Todoroki Shoto following canon events. This blog will be written after the war - more detailed info can be found on my blog!
Mun Name is Lukas, 25+ and I’ve been on this site for god knows how many years. I welcome everyone to interact with my muse, crossovers and OCs included!
I don’t always follow back but that is just to keep my dash organized, so I don’t get overwhelmed! We can still interact - just read my rules!
I always read the rules of every rp-blog that I follow or that follows me but I do not send in passwords. I will assume, if you follow me, you have read my rules too.
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@explodcor @kibouhero @penandswords @nitronapalm @avxryniceboxlder @run-muse-dot-exe (more to be added)
I had this little plot bunny running around in my head...
This is a little further in their secret not-relationship (the nile is a river in egypt and all that). Well, I was thinking if at some point Katsuki is hit in the face when they dive in for the puck and he gets knocked out cold, Shoto would elbow his way over to him, through the other players, mild panic, hella worried.
But the first thing Katsuki does when waking up is teasing Shoto for his sweaty, tear stained, blotchy red face. What do you mean his rival is worried sick about him?
Seeing sparkles and stars around someone you're totally-not-in-love with is hella gay btw. And yes, he calls him princess in my head in every AU okay - sorry not sorry.
Also I haven't watched the series, just reading the book right now haha. But thank you so much for inspiring me to pick up the pen again and I know it's hella sloppy but it was fun.
I had this little plot bunny running around in my head...
This is a little further in their secret not-relationship (the nile is a river in egypt and all that). Well, I was thinking if at some point Katsuki is hit in the face when they dive in for the puck and he gets knocked out cold, Shoto would elbow his way over to him, through the other players, mild panic, hella worried.
But the first thing Katsuki does when waking up is teasing Shoto for his sweaty, tear stained, blotchy red face. What do you mean his rival is worried sick about him?
Seeing sparkles and stars around someone you're totally-not-in-love with is hella gay btw. And yes, he calls him princess in my head in every AU okay - sorry not sorry.
Also I haven't watched the series, just reading the book right now haha. But thank you so much for inspiring me to pick up the pen again and I know it's hella sloppy but it was fun.
I had this little plot bunny running around in my head...
This is a little further in their secret not-relationship (the nile is a river in egypt and all that). Well, I was thinking if at some point Katsuki is hit in the face when they dive in for the puck and he gets knocked out cold, Shoto would elbow his way over to him, through the other players, mild panic, hella worried.
But the first thing Katsuki does when waking up is teasing Shoto for his sweaty, tear stained, blotchy red face. What do you mean his rival is worried sick about him?
Seeing sparkles and stars around someone you're totally-not-in-love with is hella gay btw. And yes, he calls him princess in my head in every AU okay - sorry not sorry.
Also I haven't watched the series, just reading the book right now haha. But thank you so much for inspiring me to pick up the pen again and I know it's hella sloppy but it was fun.
How Shoto's Quirk works and why I think he's a functional human chimera...
This is random and I've said it before but it just came up again and I wanted to analyze it and write down how I think his system works. Long ramble under the cut.
Genetic engineering:
Shoto is headcanoned as a functional chimera (two genetically distinct cell populations from early embryonic fusion).
Each half carries a separate quirk factor: fire (left) and ice (right) — not one quirk with two modes.
This explains the strict left/right separation and lack of crossover usage.
Each side can be overused independently; strain is localized while stamina drains globally.
Both quirk systems share one metabolism, nervous system, and energy pool.
His quirk likely operated from birth (confirmed by baby Shoto’s frozen snot bubble), not a late childhood manifestation.
Endeavor didn’t truly engineer a hybrid quirk — Shoto is likely a rare biological anomaly.
Temperature & Sensory Processing:
Shoto does not perceive temperature in a normal human way due to extreme thermal resistance.
Everyday “hot” and “cold” rarely reach his sensory threshold
His brain maps thermal input into texture and pressure instead of heat/cold.
Sunlight feels soft, not warm.
Cold air feels smooth / clean, not cold.
Human touch from a trusted person feels soft and grounding.
He is both touch-starved and easily overstimulated at the same time.
External tissues are highly temperature-resistant; internal tissues (lungs, throat) are more vulnerable.
Internal overuse causes organ stress (frozen lungs, coughing ice), not classic pain.
He rarely shows visible temperature damage in combat.
Quirk suppression or forced deactivation would be especially terrifying, as it removes a core bodily regulation system.
Themes:
His body literally embodies coexistence of incompatible systems.
Balance isn’t just emotional for him — it’s biological.
Sensory differences tie neatly into my autism headcanon and his calm, logical behavior.
In BNHA canon, a person is only supposed to naturally manifest one quirk factor. The only exceptions we ever see are artificial cases like All For One, One For All, or Nomu modifications. Shoto, however, quietly breaks this rule — because he doesn’t just have a dual-element quirk. He effectively has two separate quirks living in one body.
I don’t buy the idea that “Half-Cold Half-Hot” is one quirk with two modes. If it were, we’d see blended output, crossover usage, or shared biological systems. But we don’t. His ice only ever comes from his right side. His fire only ever comes from his left.
The only thing we see shared is the stamina pool, which is simultaneously why I think he doesn't need buffness or strength in a training sense but lots of stamina training because technically he has to sustain two quirks. Each side shows different physical stress responses and tolerances. They train and behave like two separate systems.
That makes way more sense to me if Shoto is a functional chimera — meaning his body contains two genetically distinct cell populations that originated from an early embryonic fusion. One lineage carries a fire-type quirk factor, the other an ice-type quirk factor. Instead of blending - like we see with his siblings - the two systems developed in a clean bilateral split.
They still share one heart, one metabolism, one nervous system, which explains why exhaustion affects his whole body even when only one side is active. But the quirk expression itself remains compartmentalized and biologically locked.
In a world that classifies quirks based on outward behavior rather than cellular genetics, this would easily go unnoticed and simply be labeled as a rare hybrid quirk. Ironically, this also means Endeavor didn’t truly “engineer” a perfect dual quirk — Shoto may be the result of a biological accident rather than controlled genetics.
I also like this headcanon because it explains inheritance variability: if Shoto’s germ cells originate from different cellular lineages, his children could inherit wildly different regulatory traits, instability, or expression styles depending on which lineage contributed.
To me, Shoto isn’t just someone who uses two elements — his body itself is built on coexistence between two incompatible biological systems. Balance isn’t just his theme. It’s literally his anatomy.
Another reason I headcanon Shoto as a functional chimera is that his quirk didn’t manifest at the usual age. Output-type quirks normally appear around age four, but we literally see baby Shoto in the manga sleeping with a frozen snot bubble — meaning his cryokinesis was already active in infancy. That implies his quirk systems were biologically online from birth rather than “activating” later through neural development. To me, that fits way better with a congenital dual-system body than with a standard single quirk awakening. It makes his power feel less like something he learned to use, and more like something his body has always been doing.
Another layer of this headcanon is that I don’t think Shoto perceives temperature normally at all. If his body has been regulating extreme heat and cold since infancy, his nervous system likely dampens thermal sensation to prevent overload. Temperature isn’t something he actively feels — it’s something his body manages automatically. That’s why he has such high thermal tolerance, rarely shows visible temperature damage in battle, and probably shouldn’t be trusted to cook. I also headcanon that his external tissues are far more resistant than his internal ones, which explains why his throat can burn while his skin remains mostly unharmed.
So when people say “that’s hot” or “that’s freezing,” he intellectually understands the words — but his body doesn’t map those sensations the way a normal nervous system would. His sensory world maps thermal input into texture instead. Sunlight doesn’t feel “warm” to him — it feels soft, like gentle pressure on his skin. Cold air doesn’t feel “cold” — it feels smooth, clean, and light. Human touch (especially Katsuki’s hands) registers as soft and grounding because it provides clear, predictable tactile feedback rather than temperature. At the same time, he’s both touch-starved and easily overstimulated: deep, familiar contact calms him, while sudden or light touch can overload quickly. Temperature isn’t emotional for him — texture is.
This is also why quirk suppression or forced deactivation would be especially terrifying for him: it wouldn’t just remove his power, it would suddenly remove a core regulatory system his body depends on, leaving him hyper-aware, unstable, and vulnerable in ways he’s never experienced before.
drop this sunflower🌻 into the inboxes of the blogs that make you happy! lets spread a little sunshine☀️
ACK! AHH THANK YOU I'M GONNA FLING THIS RIGHT BACK AT YOU! UNO REVERSE! R&TGUZHIUJOK - okay but thank you, really, I appreciate it so much. It's hard on Tumblr sometimes and knowing that I can give people happiness means a lot to me. <3
"Sensei?" he knocks on their teachers door and waits, patiently until said man is turning to look at him. If he does he might notice the teens bloodied shirt and smeared face, some light bruising, a paper towel pressed to his nose to prevent more of his blood from dripping down. He looks fine otherwise. "I'm sorry to bother you but I wanted to report myself. I've gotten into a fight with some other students, they've been taken to recovery girl." he thinks it's better to be honest about it before someone else gets the chance to tattle on him. (Hiii sorry this is random and you're absolutely not obligated to reply to it if you don't wanna but it's a random thought that popped into my head xD Shoto would tell on himself, shamelessly so)
An unprompted admission of guilt
Shota hadn't looked up immediately, his eyes drooping as he was on the cusp of dozing at his desk. The sudden call for him jerked him to wakefulness and his head snapped looking for the source of the sound. He rose to his feet as he listened to Shouto's explanation, picking up the trashcan beside his desk as he moved. Eyes swooped over him for any injury that wasn't as obvious as his bloodied face.
"Come here," Shota prompted, his voice unwaveringly stern. As soon as the teenager was close enough, he grabbed Todoroki by the shoulders firmly, settling him in the visitor's chair across his desk. Shota then placed the small garbage can on the boy's lap. "If you feel blood pooling in your mouth, spit it out. We don't need you to get a stomach ache on top of it." Shota was sure that Todoroki of all people knew how to care for a bloody nose but the nurturing itch inside him wouldn't be satisfied until he was certain the injury was properly taken care of.
He plucked half a dozen tissues from the box on his desk and motioned for Todoroki to toss the soiled paper towels. Experienced hands then moved to replace them, his right pinching hard at the fleshy part of Shouto's nose, his left moving to the back of Todoroki's split-colored head forcing him to lean forward. They sat in silence as the gears in Aizawa's head turned. Finally, about after an eternity he spoke. "Did you start it?" Shota asked, his tone much softer than it had been initially.
Shoto didn't object or protest the maneuvering and let himself be seated, only flinching once when his nose was pinched but the tension drained from his features as he adjusted to the new position. The soaked tissue was dropped in the bin as he took a new one into his hand. "I'm sorry for the mess." he said earnestly, then paused.
From this position he couldn't see the mans face and since nodding was off the table for obvious reasons, he would have to verbalize his thoughts instead.
"Yes." he provided calmly, then after a second of silence he added: "I think. Depends on what starting means. First physical contact, no. First punch. Yes."
He wouldn't try to explain things further unless prompted. Shoto knew the rules for fights among students. If Aizawa wanted to hear a retelling of the events leading up to this, Shoto assumed he would ask him for a report.
How Shoto's Quirk works and why I think he's a functional human chimera...
This is random and I've said it before but it just came up again and I wanted to analyze it and write down how I think his system works. Long ramble under the cut.
Genetic engineering:
Shoto is headcanoned as a functional chimera (two genetically distinct cell populations from early embryonic fusion).
Each half carries a separate quirk factor: fire (left) and ice (right) — not one quirk with two modes.
This explains the strict left/right separation and lack of crossover usage.
Each side can be overused independently; strain is localized while stamina drains globally.
Both quirk systems share one metabolism, nervous system, and energy pool.
His quirk likely operated from birth (confirmed by baby Shoto’s frozen snot bubble), not a late childhood manifestation.
Endeavor didn’t truly engineer a hybrid quirk — Shoto is likely a rare biological anomaly.
Temperature & Sensory Processing:
Shoto does not perceive temperature in a normal human way due to extreme thermal resistance.
Everyday “hot” and “cold” rarely reach his sensory threshold
His brain maps thermal input into texture and pressure instead of heat/cold.
Sunlight feels soft, not warm.
Cold air feels smooth / clean, not cold.
Human touch from a trusted person feels soft and grounding.
He is both touch-starved and easily overstimulated at the same time.
External tissues are highly temperature-resistant; internal tissues (lungs, throat) are more vulnerable.
Internal overuse causes organ stress (frozen lungs, coughing ice), not classic pain.
He rarely shows visible temperature damage in combat.
Quirk suppression or forced deactivation would be especially terrifying, as it removes a core bodily regulation system.
Themes:
His body literally embodies coexistence of incompatible systems.
Balance isn’t just emotional for him — it’s biological.
Sensory differences tie neatly into my autism headcanon and his calm, logical behavior.
In BNHA canon, a person is only supposed to naturally manifest one quirk factor. The only exceptions we ever see are artificial cases like All For One, One For All, or Nomu modifications. Shoto, however, quietly breaks this rule — because he doesn’t just have a dual-element quirk. He effectively has two separate quirks living in one body.
I don’t buy the idea that “Half-Cold Half-Hot” is one quirk with two modes. If it were, we’d see blended output, crossover usage, or shared biological systems. But we don’t. His ice only ever comes from his right side. His fire only ever comes from his left.
The only thing we see shared is the stamina pool, which is simultaneously why I think he doesn't need buffness or strength in a training sense but lots of stamina training because technically he has to sustain two quirks. Each side shows different physical stress responses and tolerances. They train and behave like two separate systems.
That makes way more sense to me if Shoto is a functional chimera — meaning his body contains two genetically distinct cell populations that originated from an early embryonic fusion. One lineage carries a fire-type quirk factor, the other an ice-type quirk factor. Instead of blending - like we see with his siblings - the two systems developed in a clean bilateral split.
They still share one heart, one metabolism, one nervous system, which explains why exhaustion affects his whole body even when only one side is active. But the quirk expression itself remains compartmentalized and biologically locked.
In a world that classifies quirks based on outward behavior rather than cellular genetics, this would easily go unnoticed and simply be labeled as a rare hybrid quirk. Ironically, this also means Endeavor didn’t truly “engineer” a perfect dual quirk — Shoto may be the result of a biological accident rather than controlled genetics.
I also like this headcanon because it explains inheritance variability: if Shoto’s germ cells originate from different cellular lineages, his children could inherit wildly different regulatory traits, instability, or expression styles depending on which lineage contributed.
To me, Shoto isn’t just someone who uses two elements — his body itself is built on coexistence between two incompatible biological systems. Balance isn’t just his theme. It’s literally his anatomy.
Another reason I headcanon Shoto as a functional chimera is that his quirk didn’t manifest at the usual age. Output-type quirks normally appear around age four, but we literally see baby Shoto in the manga sleeping with a frozen snot bubble — meaning his cryokinesis was already active in infancy. That implies his quirk systems were biologically online from birth rather than “activating” later through neural development. To me, that fits way better with a congenital dual-system body than with a standard single quirk awakening. It makes his power feel less like something he learned to use, and more like something his body has always been doing.
Another layer of this headcanon is that I don’t think Shoto perceives temperature normally at all. If his body has been regulating extreme heat and cold since infancy, his nervous system likely dampens thermal sensation to prevent overload. Temperature isn’t something he actively feels — it’s something his body manages automatically. That’s why he has such high thermal tolerance, rarely shows visible temperature damage in battle, and probably shouldn’t be trusted to cook. I also headcanon that his external tissues are far more resistant than his internal ones, which explains why his throat can burn while his skin remains mostly unharmed.
So when people say “that’s hot” or “that’s freezing,” he intellectually understands the words — but his body doesn’t map those sensations the way a normal nervous system would. His sensory world maps thermal input into texture instead. Sunlight doesn’t feel “warm” to him — it feels soft, like gentle pressure on his skin. Cold air doesn’t feel “cold” — it feels smooth, clean, and light. Human touch (especially Katsuki’s hands) registers as soft and grounding because it provides clear, predictable tactile feedback rather than temperature. At the same time, he’s both touch-starved and easily overstimulated: deep, familiar contact calms him, while sudden or light touch can overload quickly. Temperature isn’t emotional for him — texture is.
This is also why quirk suppression or forced deactivation would be especially terrifying for him: it wouldn’t just remove his power, it would suddenly remove a core regulatory system his body depends on, leaving him hyper-aware, unstable, and vulnerable in ways he’s never experienced before.
You don’t have to be nice to my character. You don’t have to hold your character back. I am perfectly okay with consequences. I don’t consider powerful characters using those powers to be godmodding. Some things might require a little bit of a chat before hand, but go crazy, kids. Conflict is part of story telling.
Katsuki threw a snowball at Shouto's ass. When his boyfriend turned around, he'd be sure to see a shit-eating grin on his face.
Shoto pauses again when he's hit and turns around, snorting softly when he sees his boyfriend openly grinning at him. His chest does a little rollercoaster then and there and he knows, this is what happiness feels like.
Doesn't mean, Shoto won't bend down, gather some snow and throw it right back in Katsukis direction. It's less a ball and more a powdery cloud that engulfs them but it's worth it nonetheless.
Lance ran in and pelted Shoto with a couple snowballs before running off -- good luck catching him, he's fast.
The onslaught comes unexpected and all projectiles hit their target with soft thuds. Shoto gasps, standing there stunned for a second, blinks in confusion and then suddenly bursts into soft laughter as he brushes the snow from his hair.
He's never been in a snowball fight and this is- actually quite fun.
@heterochromatica said: "Katsuki?" he waits until he's got his boyfriend attention: "Someone said I should ask you this." he pauses, glances at his phone, which is the first sign that something unimaginable stupid is going to come next. Katsuki can take a wild guess who gave his boyfriend this splendid idea. Shoto's voice remains dry as sand as he continues: "Since I didn't grow up with a proper father, do you want to be my daddy?"
As soon as Shouto said "someone said to ask you this," Katsuki knew he was in for it. A shadow crossed over his features. He knew he'd hate this.
The question made him short-circuit. Katsuki's entire face went the shade of a bright red cherry. ".................."
"........................................"
It took him a good minute to remember how to speak words again. "HAHH!??!"
"Who the fuck put you up to that?!" he asked with an eye twitch. "I swear if it was fuckin' Pikachu, I'll kill him--!"
He notably didn't give a clear answer to Shouto's question.
Shoto blinks with mild concern as he sees his boyfriends face light up like fireworks on snow. Now he's idly wondering if it's due to what he said or some kind of innuendo he didn't catch? But Denki said it would be funny?
Katsuki doesn't seem too amused about it though?
"Are you okay? Did I say something weird?"
And then he nods. "He said it's a funny thing to say?"
Sometimes Shoto hates himself. Even as adult, even after so many years, even after everything has been said and done. Sometimes, those ugly feelings resurface and he can't stand looking at himself in the mirror.
It's even harder when a mission went wrong.
When someone got hurt, when people have lost their lives because he wasn't fast enough, wasn't strong enough, wasn't there enough. He knows, rationally, that even the greatest heroes can't save everyone, but now, in the locker room when he's getting changed, he feels the weight of the world crushing him and he wants to scream but his lips remained sealed.
