If u are here, it seem i have caught your interest.

This is my first story so bear with me here, i will try my best to make it seem good

I'll also edit somthings later on as it goes by if I think of somthing better or fix stuff. I will basically rewrite parts of the past chapters, maybe most of it if need be, if I can think of a better way of doing it that is. So if you see parts get choppy/missing , that's because of me editing, other time it's me missing some spots during editing.

This is also not a harem, not doing that for this story or any other story's as of yet.

My au

UA will a university, everyone will be 20 in the start of the first year cause plot reasons

The night sentinel are a special operations unit that serve within the U.N. To to find, control, and eliminate threat to the likes of civilians, country's, states, or the world. A secret unit only the U.N. Knows of and keep under radar from the public, governments, and hero's view as they deal with a different type of threat that is more dangerous than the ones hero's normally face on a daily basis. That being said, they also deal with corruption within society such as hero's, corporate, government, and hero associations.

If one or, a group of sentinels were to find something off or, see a different situation. They can have the authority to go off course of the mission as long as it has no negative affects to check or take care of. But must also be tactical about it as not to risk it.

They also don't just take in anyone, they must be smart, efficient, and determined. The strength of their quirk does not matter to them but, the strength of their will and determination. They are not here to be flashy, popular, rich, or powerful. They are to serve the good, protect the innocent, and eliminate the evil by any and all means necessary to keep the world running clean.

Description

Izuku yagi, once loved and cheerful, now neglected and abuse by those closest to him after a certain visit to only be deemed.....

...quirkless.....
.
.
.
But he was anything but quirkless....

2 years after the visit, he started hearing voices that sound like they were chanting or saying something but, could never make out what it was saying whenever asleep or unconscious.

One day the tormentors take it to far and unknowingly kill him......

That is if it wasn't for somthing awakening on its own.

Izuku yagi(age 4)
Quick n/a
Likes: his family and friends,
Dislikes: villians, perverts,
Personality: cheerful, nice, selfless

Izuku aizawa, age 20.

(So pretend that his green hair also have black tips, his eyes having a toxic green glow with a crimson red hue to it. And you can partially see 2 scars from where the chest is seen. And finally, he has an emotionless face expression without the cig.)

Likes: Daisy, the night sentinel, his parents, his daughter(later on), saving and protecting the weak, the innocent, keeping people safe,.

Dislikes: the yagi's, the todoroki twins, bakugo twins, Izumi, villains, egotistical people, someone flirting with Daisy, perverts(he isn't rash now)

You will find out who Daisy is later on in the story also

Hates/will kill on sight:Rapists, someone threatening his family, pedophiles, the fucked up abusive people, psychotic shit's that torture. Any inconceivable low down piece of shit

Personality: (known by those close to him)
-emotionless but also caring
-tactical
-sometimes a dumbass(by daisy)
-an unwavering will to protect
-unyielding determination
-gentle
-marksman

-warm
-protective
-perspective
-analytic

(Know by those he protects)
-Silent
-cold
-gentle
-understanding
-caring
-Protective
-imitating

(Known by those he goes against/villains )
-Silent but deadly, literally. has never been heard talking when going against an enemy, so they assumed he never talked. ever.
-ruthless
-relentless
-stealthy
-killer

-hunter
-marksman
-incorruptible
-uncompromising
-death personified
-deaths right hand man
-doom incarcerate
-Hells bane 

So to explain his personality abit, it's a mix of doom's personality with izuku's personality.

To those he cares about, he seems caring. basically izukus personality but is emotionless

to those he protects, their savior, their protector, and their avenging angel.

To those he is against, basically doom guy's regular personality. The bat shit, you done fucked up and will turn a satanist into a Christian in a fucking picosecond.

Quirk: mark of the beả̷̛̺͂̑͗̈́̃͘͝͝s̵̢̜̲̘͚̯͈̮̘̜͙̮̲͙̺̱̅͊́̿̃̃͊̃́̔̓̔͑́̕t̸̫̣͓̻̝͚̒͛̈́̓͊̽͘

Abilities:
-immen̡̑̈́̏̾͏̝̣͉̖̲̜̗ṣ̷͇̤̼̘̽͑̍̇͋́̕ë̴̹̱͇͈̮̎͑ͮ̊̈́̎̕ strength
-immen̡̑̈́̏̾͏̝̣͉̖̲̜̗ṣ̷͇̤̼̘̽͑̍̇͋́̕ë̴̹̱͇͈̮̎͑ͮ̊̈́̎̕ speed
-immen̡̑̈́̏̾͏̝̣͉̖̲̜̗ṣ̷͇̤̼̘̽͑̍̇͋́̕ë̴̹̱͇͈̮̎͑ͮ̊̈́̎̕ durability
-immen̡̑̈́̏̾͏̝̣͉̖̲̜̗ṣ̷͇̤̼̘̽͑̍̇͋́̕ë̴̹̱͇͈̮̎͑ͮ̊̈́̎̕ stamina
-immen̡̑̈́̏̾͏̝̣͉̖̲̜̗ṣ̷͇̤̼̘̽͑̍̇͋́̕ë̴̹̱͇͈̮̎͑ͮ̊̈́̎̕ regeneration

-immen̡̑̈́̏̾͏̝̣͉̖̲̜̗ṣ̷͇̤̼̘̽͑̍̇͋́̕ë̴̹̱͇͈̮̎͑ͮ̊̈́̎̕ heat resistance
-portal
-personal weapon summon
-pocket dimension
-the crucible
-extracT̛̠͎̰̝̯̹̩̃̔̓̅͌ͧ̀́̄̃ͧ̐́̕̚i̛͇̮̫̩̥͚͛̀ͬ̆̈́ͣͯͫ̃ͦͫ̒̃͗̀ͧơ̴̴̧̖͈͉̗͖̮̤̟̅ͯ̅̐̋̋̅͂̊ͣ̇n̴̛̗͖͚̠͉̖̻̞̣̦̄ͪ́̾͆̈́͋͂̃̔͘

Drawback: it influences the user to get angry. The angrier the person gets, the more influence it gives off

Pocket dimension: a personal pocket dimension they can use to store items

Weapons gotten later on:
-sentinel hammer
-plasma rifle
-combat shotgun

Personal weapon summon: personal weapons that come with the quirk that are stronger and far more devastating than any normal weapon

Weapons:
-super shotgun
-meathook(super shotgun attachment)
-unmayker
-bfg 9000
-chaingun
-ballista
-heavy cannon
-rocket launcher
-???(the most brutal weapon imo)

The crucible: the slayers sword that will kill and cut anything. Hotter than what a hyper-nova wishes it could produce. (This also isn't even half of the temperature the lore accurate crucible could produce when compared. Not exaggerating about that)

Also seems to have thin barrier surrounding the blade when activated that, in a way, keeps most of the heat in. (Still does not change the fact that steel will melt just by being near it.)

Drawback: surrounded area will melt near him when activated and, takes up a lot of stamina when activated.

Extraction: when he kills someone, he takes their strength, speed and stamina adding to his own while also constantly absorbing the life force from any surrounding wildlife(plants). It also allows him to heal others as extraction allows him to allow others to "borrow" his immense regeneration.

Side notes:/ second hand description that is not shown in the quirk description for the characters in the story to see.

Extraction combined with his immense stamina and regeneration just about literally give him infinite stamina. His strength and speed are also infinite as there is no limit to how much strength and speed nor energy extraction can take and give to the user. His strength, speed, and stamina are also constantly growing as he is passively Always taking in energy

Also little know fact is that extraction can also absorb any form energy if wanted, and I mean any (can't take quirks because that's genetic.) as in pure. Raw. Energy. for example it can take nuclear, heat, electrical energy, and or kinetic energy if needed/wanted.

Gets to a point where it's so strong, the area around him started to look like it's getting warped and darker because what is happening is, the light itself is being pulled into him by extraction. This can also make him invisible to things like radar, heat vision, night vision, sonar, etc

Immense regeneration: while it regenerates the health and stamina for both the host and others and, makes the host immune to everything such as poison and or diseases. it also seems to do more than it says

How much of an effect it has just depends how much energy the host will output into the receiving end when using it on someone else but it doesn't take the energy from him, rather from the surrounding area.

I also want to note that all of the ability's of the quirk have some lore accurate connections, with a bit of added bits on my part.