#dkbk a/b/o when katsuki finally fully presented as an omega, he...
zeein kacchanholic@prettyboykats
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May 18, 2026
~4 min read
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#dkbk a/b/o
when katsuki finally fully presented as an omega, he knew changes will happen but /scents/ in particular was the first thing to catch him off guard. the second he's able to recognize them, he decided HE HATES alpha's scents.
except izuku's.
when katsuki finally fully presented as an omega, he knew changes will happen but /scents/ in particular was the first thing to catch him off guard. the second he's able to recognize them, he decided HE HATES alpha's scents.
except izuku's.
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now he understands the whole 'scent patch' thing he's been hearing about. now he gets why most alphas wear them and why they only ever uses their scent around their mate, their closest people or as a THREAT.
most of them smells like a strong musky perfume and he DESPISE THEM.
most of them smells like a strong musky perfume and he DESPISE THEM.
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he prefer softer, sweeter and more natural scent while most of these alphas smells like an angry bull.
of course, except izuku.
not like the nerd smells sweet or anything, it's just never piercingly rough despite him being a prime alpha..or maybe that's the reason ?
of course, except izuku.
not like the nerd smells sweet or anything, it's just never piercingly rough despite him being a prime alpha..or maybe that's the reason ?
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his scent felt more in control. it's not raging or overwhelming, it feels like nature.
to katsuki, the nerd smells like the forest. most of the times it reminds him of how the early morning hiking trails he often visit right after rain smelt like.
to katsuki, the nerd smells like the forest. most of the times it reminds him of how the early morning hiking trails he often visit right after rain smelt like.
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of fucking course the prime alpha gotta somehow smells like the thing he loves the most.
so he never had any problems being around izuku, hell he...actually likes it. despite him having to smell the others alongside the nerd, most of the times he's /engulfed/ in his.
so he never had any problems being around izuku, hell he...actually likes it. despite him having to smell the others alongside the nerd, most of the times he's /engulfed/ in his.
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it's what they called 'scenting'.
he's heard of this of course. it's that gross thing alphas and omegas does with each other all the time in front of his previously beta self. now he's an omega, being pulled into izuku's arms to do that exact gross thing..but he's not hating it.
he's heard of this of course. it's that gross thing alphas and omegas does with each other all the time in front of his previously beta self. now he's an omega, being pulled into izuku's arms to do that exact gross thing..but he's not hating it.
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when izuku releases that calm pheromones that wrapped his whole body like a soft blanket, he'd be insane to complain. the fact that izuku is a prime alpha made his scent last longer and is more prominent compared to the rest ! he never had to smell any extras !
he loves it.
he loves it.
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he loves it when izuku reached for him with his warm hands, how softly he'll handle him as if he's a piece of glass that might break. he loves the way izuku would gently nose at the length of his neck, before he chuckled slightly upon smelling the 'sweet scent'.
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katsuki's scent hasn't fully developed yet so they're faint but izuku was already in love it. he said /his/ kacchan smells like fruits, a sweet sweet one with a hint of tanginess.
izuku would kiss his gland gently then, muttering his thanks to gods and goddeses and all might.
izuku would kiss his gland gently then, muttering his thanks to gods and goddeses and all might.
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he'll rub their cheeks together as he released more and more of his scent, coating katsuki's glands with them too.
"mine, my omega" he likes to repeat it and katsuki never bothered to make him stop.
it's not bad. not at all. he's izuku's and he smells like him,
"mine, my omega" he likes to repeat it and katsuki never bothered to make him stop.
it's not bad. not at all. he's izuku's and he smells like him,
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and it happened to be his favorite scent.
gentle, refreshing, safe, deep-
nope. he then realized, it's not just that. what he's been smelling this whole time was just a scent that izuku wished to pump out. it's just what the prime alpha /chose/ to smell like.
gentle, refreshing, safe, deep-
nope. he then realized, it's not just that. what he's been smelling this whole time was just a scent that izuku wished to pump out. it's just what the prime alpha /chose/ to smell like.
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when he snapped at a villain who kept targetting his omega, katsuki realized his scent is STRONG.
it sent him stumbling backwards. its masculine, it's threatening, it's overwhelming like a- almost like a-
like a burning forest. like one deep in flames with thick, heavy smoke.
it sent him stumbling backwards. its masculine, it's threatening, it's overwhelming like a- almost like a-
like a burning forest. like one deep in flames with thick, heavy smoke.
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it made him whimper before he realized. the omega in him was mewling and also hissing because why isn't alpha protecting him ? he doesn't hate this smell either, he wouldn't if izuku hold him and tell him it's safe. if he's in izuku's care then he'll like it too.
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luckily that's what izuku did right away.
"im sorry, im sorry baby. you're safe, mine and safe." he muttered the second he got to hold katsuki after his whole rampage, forcing the wilding pheromones to settle down.
it was katsuki's first time submitting to a scent.
"im sorry, im sorry baby. you're safe, mine and safe." he muttered the second he got to hold katsuki after his whole rampage, forcing the wilding pheromones to settle down.
it was katsuki's first time submitting to a scent.
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immediately he understood what command actually is. he'd be lying to say it doesn't scare him but the way izuku was cradling him gave him a sense of relief.
izuku would never misuse them. he'd never bare his fangs to him but for him. he'll never try to 'tame' him with his scent.
izuku would never misuse them. he'd never bare his fangs to him but for him. he'll never try to 'tame' him with his scent.
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well, that part sounds kinda hot. katsuki must tell his alpha about the new discovery later, just..for the record. for now, he'll let himself melt as izuku's scent swallow him whole.
"my precious omega..."
it's not bad to be an omega. really not bad..
"my precious omega..."
it's not bad to be an omega. really not bad..
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