Chapter Text
10 year old Izuku Midoriya had a rough day, well a rough life really but today was worse than normal, Kachan and his friends used him for quirk practice again, the teachers did nothing about it as usual, at the end of the day Kachan blew up one of Izuku's 'stalker books' and damaged several of the pages beyond what he could repair before tossing it into the pond outside the school.
After brushing off Inko's concern, he loved his mother don't get him wrong, he just didn't want her to worry about him anymore than she already was, Izuku dragged himself to his bed and settled in for a dreamless sleep...
however of course the universe had other plans
Izuku's sleep is shattered by a blinding flash of purple light and energy
"What?" he asks himself as he opens his eyes, Izuku's eyes widen in Suprise as he finds himself on a floating island of baren rock surrounded by a deep purple glow
"-what do you mean you don't know Lilith." A voice almost yells, drawing his attention away from the space around him.
Turning to the voice Izuku finds a group of 8 figures. the first one, the woman who's yell drew his attention, had long blue hair and wore a black and white skintight outfit without a sleeve on her right arm, an arm covered in an intricate glowing blue tattoo. the second figure had much shorter red hair and a glowing red tattoo peeking out from under her sleeveless jacket. a third figure had mid length black hair pulled into a ponytail and a white glowing tattoo under her tank top. the 4th woman had black and blue hair and a glowing purple tattoo and a combat jacket on her jacked frame. A woman with shoulder length purple hair and a green tattoo under her green tank top was the 5th figure Izuku saw. the 6th figure sports mid back length white hair and had a black tattoo partially covered by a white body suit. the last humanoid figure had blonde hair and a yellow tattoo.
the 8th figure was less humanoid and looked like a mutation quirk, though not one Izuku had seen before, the figure stood on elongated digitigrade legs, an insectoid like body attached to elongated arms ending in 5 digit claw like appendages, a faceless mask that betrayed no emotion watched the woman as wing-like appendages hovered behind the figure's back, a bleached armor like exoskeleton shell covered the figures body with a few instances of red feather like material poking out.
"I mean that I have no idea where we are, what we are doing here, or how we got here Maya." the red headed woman, Lilith, spoke "I don't even know who you three are." Lilith gestures to the woman with purple hair, white hair, and blonde hair. "or what an Eridian is doing here and why It's not attacking us." Lilith points to the bleached non-humanoid figure
"we're not alone here." the white haired woman spoke
everyone's attention turns to the woman as the blue haired woman, Maya, spoke "What do you mean we're not alone? we're standing on what looks like a shattered piece of necrodefeo in open space. and who even are you people."
"my name is Nyraid." the woman answers as she points to Izuku "And we have a second watcher."
Izuku squeaks in fear as everyone looks at him
"Kid, do you know where we are?" Lilith asks
Izuku opens his mouth to speak but finds himself unable to and shakes his head instead
"He is the next Siren." A booming voice speaks, the voice coming from all around him
"What?" all 7 women ask in unison
"He is the next Siren." the voice speaks again
the purple haired woman looks at the elongated figure, the eridian, and speaks "What happened?" she demands
"the voidshrowd was activated, Sirens are no more in the borderlands." the eridian responds
"Borderlands? Sirens? Eridian? Voidshroud? What is going on and why is it happening to me?"
"Kid, where were you before this?" Maya asks
"In my room? in Japan?" Izuku answers cautiously
"He is from another realm than you." the eridian spoke "the Voidshroud reset your realm and a new one was chosen to house the next Siren."
"Ok, what is the Voidshroud?" the buff woman asks
"It was a weapon." Nyriad answers somberly "A failsafe incase the vaults failed or went out of control."
"What was it?" Lilith asks
"An eridium anti-matter charge in the center of the galaxy." the blonde answers "when it was activated a pulse swept over our galaxy, disintegrating eridium, sealing the vaults and...neutralizing sirens."
"So we died to some sort of eridian doomsday weapon?" the buff woman asks
"Yes."
"but that doesn't explain why we are here, or where here actually is." Maya states
the woman with the white tattoo cleared her throat "actually...I think I know where we are."
Lilith looks expectantly at the speaker "Well Angel, are you going to tell us or leave us hanging."
the black haired woman, angel, sighed "I think we are in this boy's head, a sort of dream space."
Everyone but the Eridian looks at Izuku "how did you figure that?"
"Because I can only access a few of my memories, mostly related to my siren powers, but I can access all of his memories, Izuku Midoriya."
"What is a Siren." Izuku asks, slightly agitated at being ignored
"Since you obviously aren't from our universe a Siren is a person infused with great power, something passed on from generation to generation, as a siren dies they chose their successor...well until now. You're also the first documented male Siren Izuku Midoriya."
Izuku begins to practically vibrate "You mean I have a quirk Afterall?"
everyone looks at Izuku confused, no one noticed the eridian disappearing into nothingness
"Quirk?" the buff woman asks "What the hell is a quirk Pipsqueak?"
"Amara." Maya scolds "But yes Izuku we would like to know what a quirk is."
Izuku takes in a breath and calms himself down "quirks are something that most people now have, they're a power you're born with. most common are strength or durability enhancements and fire control or generation quirks..." Izuku beings a mutterstorm about the advent of quirks.
everyone but Nyriad looks at Izuku in shock as Nyriad chuckles
"So siren powers aren't quite quirks but they're close enough that no one would be suspicious."
everyone looks at Nyriad in shock
"You understood that?" Amara asks
"Yes." Nyriad answers matter-of-factly
"Wait, if sirens are your world's version of quirked people, and you're in my head, and I'm the next siren...doesthatmeanI'mgettingallofyourabilitiesordoallsirenshavethepastonesinthierhead-"
"Woah, slow down Izuku." Maya speaks, interrupting Izuku's mutterstorm
"we don't know if you're going to get our abilities Izuku." Nyriad speaks "I don't know about everyone else but given none of us knew what was going on it's safe to say this has never happened before to any of us."
Angel thinks for a moment before snapping her fingers "I've got it." Angel pauses to allow everyone to look at her "can any of you use your siren powers in here? Minre relies on a machine so I can't try it."
"Mine won't work in here either, it requires animals." the purple haired woman speaks
Lilith closes her eyes and concentrates, her tattoo glowing brighter until she disappears in a wave of energy.
"woah." Izuku gasps
Lilith reappears in front of Izuku with a grunt "I can use mine, though it takes much more effort than it ever has."
Izuku stares at Lilith in awe "What's your name and what can you do?" he asks as a notebook materializes in his hand
"Where did that come from?" Lilith asks
Izuku shurgs
Lilith hums in amusement "Well to start this off my name is Lilith and my ability is called phasewalk, it lets me become invisible and intangible for a short time, I can't phase through solid objects and I release a burst of energy when I phase in and out."
Izuku nods and begins rapidly scribbling in his memory-notebook
"I'm up next I guess, I'm angel and my ability is Phaseshift, I can manipulate electronics or machines I'm in contact with or connected to."
"I'm Maya and Phaselock lets me essentially trap someone or something in a dimensional bubble, rendering them unable to attack or retreat, the strength of the enemy determines how long I can hold it at a time."
"I'm Amara, Phaseslam lets me generate Mimics of my body parts made of solid energy and use them as extra appendages." Amara accents her explanation my generating a pair of massive ethereal arms floating behind her
the purple haired siren steps up "I'm Asha, Animal control lets me link to and command nearby animals."
"You broke the naming scheme" Izuku mumbles, causing a chuckle to rise out of the sirens
"Nyrid, Phaseleech lets me drain things of their energy."
Izuku's pencil snaps as Lilith, Maya, and Amara's heads snap to Nyrid
"You mean like Tyreen did to me before?" Lilith demands, anger creeping into her voice
Nyriad nods "Unfortunately yes, it can be used to take siren abilities, I never used it like that in practice but it was always possible."
"Does...Does that mean I could take people's quirks?" Izuku asks, half in awe of the power and half in fear of what it could do to
Nyriad shrugs
the blonde woman gently puts a hand on Izuku's shoulder "I'm Riou, my ability Phaseform, lets me channel eridium and create constructs of objects I'm familiar with."
Izuku summons another pencil and continues writing down in his notebook but is interrupted by the world around him flashing slightly brighter "What's going on?"
"I think you're waking up Izuku." Angel answers thoughtfully\
Izuku snaps awake and looks around his room to find nothing out of place "Was it just a dream?" he thinks to himself as he stretches. Izuku jumps slightly as he notices a spiraling tattoo similar to the sirens in his dream.
"It wasn't a dream kid." Lilith speaks in Izuku's head
"GAH!" Izuku startles and falls off of his bed "It was real?"
"Yep" Lilith replies
Izuku looks down at his tattoo that is now glowing a toxic green "Woah...I have a quirk now....I HAVE A QUIRK NOW!" Izuku jumps up with his exclamation
"Izuku?" Inko asks from the living room of their apartment "Are you ok?"
Izuku rapidly opens the door and takes off sprinting to the kitchen "Mom I got my quirk." Izuku excitedly exclaims as he points to his glowing tattoo
Inko nearly drops the pan as she turns around to face Izuku "You did?"
Izuku rapidly nods 'do any of you who's ability I got? also can the others speak to me yet?' the greenet asks mentally
"No clue who's you got but right now it seems I'm the only one who can communicate with you while you're awake." Lilith responds
Izuku nods, confusing Inko, and begins to try to focus on the siren abilities of the women he talked to last night, scrunching his face and clenching his fists as his tattoo glows even brighter until he reaches a peak and feels like a switch inside him was flipped.
Inko watched in a mix of concern, confusion, excitement, and fear as Izuku tries to activate his quirk that he says he got last night 'I really hope he's right...I'm not sure if he would be able to bounce back from this one.'. Much to Inko's surprise one moment Izuku simply disappears without a trace after a short pulse of energy.
Izuku opens his eyes to see everything tinted slightly purple, looking down at his hands he sees his entire body as a see-through purple shell before everything goes back to normal a moment later. 'guess I got Phasewalk'
"Izuku was that you?" Inko asks
Izuku rapidly nods "yeah...and that's not all I can do." Izuku goes back to concentrating and feels a pop and hears Inko gasp, opening his eyes Izuku find's Lilith standing between him and his mother "Lilith?"
Lilith rapidly blinks and looks at Izuku "Kid...did you just manifest me a physical body?"
Inko rapidly shakes off her shock and summons a dozen knives as she stares down the woman who appeared in her kitchen "Who are you, how did you get here, and what do you want." she demands
Lilith looks at Inko and jumps back slightly at the floating knives "From the top my name is Lilith, I think Izuku summoned me for lack of a better term, and I don't really have a goal."
"What do you mean my son summoned you?" Inko asks wearily
"The short answer to get you to put the knives down is that I'm part of Your son's quirk, I kind of just appeared last night in his dream I guess, and when he woke up I was in his head." Lilith responds
Inko slowly puts the knives back "What's the long answer?"
Lilith sighed "How much time do you have for me to explain everything."
"Enough."
============
"So you're telling me Izuku's quirk is not from our universe, and that he has you and 6 other women in his head and that he may manefest all of you guys' abilities?"
Lilith nods "yep, that's the gist of it. Now one important thing we discovered last night is that we have access to our memories that pertain to our abilities only but we can access all of Izuku's memories and the 7 of us discovered something we agreed one of us should talk to you about, It involves a Blonde kid Izuku calls 'Kachan'"
Izuku's eyes widen in fear as he realizes what the sirens found "no, you don't need to do anything about him...It's ok Lilith"
Inko looks between Izuku and Lilith "What are you talking about."
"Just to start so you know I can access your son's memories: for his 4th birthday, 2 weeks before a doctor diagnosed him 'quirkless', Izuku was given a pair of 'allmight' socks and gloves and two weeks later he cried while watching a video of 'allmight' saving people from the debris of a battle."
Inko looked at Lilith slightly surprised "ok...I believe you, what did you want to talk about." Inko momentarily sifts her gaze to Izuku
"'Kachan' regularly uses what I assume is his quirk to create explosions on Izuku."
"No...he's not doing anything bad I promise." Izuku protests
"Izuku.." Inko trails off as she notices the fear in her son's eyes
Lilith sighs "Izuku, none of what he did to you is your fault, none of it, now please lift up your shirt."
Izuku reluctantly complies and Inko gasps in horror as she spots 3 distinct handprint and explosion marks across Izuku's chest.
Inko rapidly stands up, the force of her chair sliding back startling Izuku "Lilith, thank you for telling me this. Izuku, Lilith is right, none of this is your fault." Inko uses her quirk to pull her phone towards her "Izuku dear You're not going to school today, I need to make a few phone calls."
Inko dials a number as she walks into her bedroom "Mitsuki we need to talk."
Izuku flinches slightly at the coldness if her tone before turning back to Lilith
"Kid, Listen." Lilith kneels down infront of Izuku "I know you feel like you deserve it for being born without any powers but that's wrong, those of us with powers are supposed to protect those without them, that's the code I along with the rest of the sirens in your head lived by and it's what you should live be as well...None of this was your fault."
Izuku looks down at his shoes, not fully believing Lilith "But-"
"no buts." Lilith interjects "You didn't deserve anything you got just for how you were born."