Paris.

The City of love and home to a young man called Y/N who is considered the shadow.

It because he barely talk to anyone except for his childhood friend Marinette Dupain-Cheng aka the clumsy girl.

But despite his friendship with Marinette no one barely notice him not even Marinette classmates.

Even when he see what happening or try to speak out loud everyone ignore him

Thus giving him the title shadow.

However today is a special day as it the second anniversary of Hero Day which everyone is excited except for Y/N.

He see how much stress his childhood Marinette is in as the class representative but despite the stress she is trying her best.

But Lila the liar is causing nothing but suffering for Marinette and have everyone in the classroom wrapped up in her lies.

What worst is that Adrien, Marinette crush, told her to take the high road which broke Marinette heart.

Which was the last straw for Y/N as he saw Marinette run from Adrien crying.

Y/N Pov:

I watch as Marinette run away from Adrien inside an empty class room which immediately I see red as I walk up to Adrien then punch him causing him to spit out blood.

Adrien: "The heck! Who do you think you are!" He said but froze.

Me: "I am Y/N and I'm Marinette childhood friend. You made a big mistake breaking her heart " I said slamming my foot onto his chest.

I then grab his hand then pull out the ring which shock him.

Adrien: "Hey! Give that back!" He said but wince when I press my foot onto his chest.

Me: "I don't think so Cat" I said shocking him.

Adrien: "Are you crazy? I'm not Cat Noir" he said but I chuckle darkly which frighten him.

Me: "Oh? Then explained this" I said pulling out my phone then him a video of him transforming into cat noir which shocked him.

Adrien: "You could have edited that" he said but I smirk.

Me: "Well how do you explain the fact that you look identical?" I said which he pale.

Adrien: "Why are you doing this! Lila lies isn't hurting anyone" he said but I growl then knock him out.

Me: "spoil brat" I said then put the ring onto my finger thus a kawaii cat appear but he froze at what happened.

Plagg: "Um hey I'm plagg" he said.

Me: "Name Y/N and for now I'm your holder now let go see Marinette" I said then Plagg enter the ring.

I begin searching the school until I arrived at some stairs where I see Marinette but I noticed she look frighten and took a step back immediately my eyes widen as I see Marinette fall and hit her head which I see blood coming out.

???: "Oh god what did we do" a female voice spoke which I look and immediately I see the villain who help hawkmoth.

Me: "You bitch!" I said which she look at me only to froze as I run at her then punch her knocking her out.

Immediately my eyes widen as the villain reveal to be Gabriel assistant.

Without hesitation I grab the peacock miraculous and see it have a crack.

I growl then see darkness coming out of my hand.

"... Fine if these assholes think I'm a shadow then let see how they handle the king" I said then darkness cover my entire body.

3rd Pov:

Standing in Y/N place is a mask man wearing clothes like an king.

Y/N: "Don't worry my queen. You will be healed" he said picking Marinette up then two monsters of shadows appear which they grab Nathalie.

They then teleport to an empty warehouse where a massive flower is at which Y/N place Marinette on while the two monsters put Nathalie in a cell.

Immediately Plagg appear but he froze at what happened then a red kawaii appear and she also froze.

Plagg: "Tikki. This is bad as we lost both our holders" he said then the two look at Y/N.

Y/N: "Don't fear as I won't harm my childhood friend" he said as he place his hand on Marinette cheek thus allowing darkness to heal her head.

Tikki: "Is she alright?" She said but he sigh.

Y/N: "She won't wake up immediately but she is being heal by the Flower sadly by the time she woke up she will missed a lot" he said then look at the two Kawaii.

Tikki: "So what now?" She said which he smirk.

Y/N: "Now we bring judgement" he said then vanish.

A few hours later.

It wasn't long until noon which is when everyone is excited for Hero Day but then a pillar of darkness came from the Eiffel Tower.

Immediately everyone run there only to stop as there is some barrier preventing anyone from entering but they can see a mask man with several people inside.

Then every device is turned on which show the mask man face.

Y/N: "Greetings everyone of Paris I am the King of Darkness and today is judgement day for a few people" he said then the devices show a class which many recognized.

Alya: "We didn't do anything!" She said but a monster point it spear at her face.

Y/N: "Oh? Then let me tell you the crimes you all committed towards Marinette" he said then everyone see images of bullying, assault, badmouthing, etc.

???: "How dare you treat my girl like that!" A tall man said which everyone look to see a baker pounding his fist at the barrier with his wife glaring at the children with two others

Y/N: "Ah Tom and Sabine, including Luka and Kagami glad you four are here as you four get the honor to see this trial in person" he said snapping his fingers causing the four to teleported inside the barrier.

Kagami: "Wait a second. Y/N?" She said which shocked everyone as they look at him.

Y/N: "Heh knew this mask wouldn't fool you" he said removing the mask.

Lila: "Who are you?" She said but immediately got scared when two monsters point their spears at her.

Y/N: "Tsk as I thought you might know the school but you don't know everyone like me. After all I'm nothing but a shadow" he said which immediately Ms Buster eyes widen.

Buster: "You're Marinette childhood friend" she said shocking the class.

Nino: "Wait what! But I never saw you!" He said which Y/N growl.

Y/N: "it's because your brain think I don't exist! However just be glad that I won't punish you. Just four who is responsible for harming Marinette" he said then everyone notices an massive flower which open up revealing Marinette herself however they notice she is wearing clothes that make her look like an queen.

Chloe: "Ridiculous! Why is she asleep!" She said but got frighten when spears is pointed at her face.

Y/N: "She nearly die thus she is being heal by the flower" he said horrifying everyone.

Alya: "You're joking right?" She said but Y/N showing what happened completely shock everyone.

Y/N: "I don't joke about death. Thus why this trial will begin. Bring in the first criminal" he said then to everyone shock it none other than Adrien.

Gabriel: "What the meaning of this!" He said but flinched when spears is point at him.

Y/N: "Simple. He say he is Marinette friend yet he told her to hit the high road" he said shocking everyone.

Tom: "You son of a-" he didn't get to finish when Sabine put her hand on his own which he stop.

Y/N: "Now then Adrien tell the witnesses the truth" he said then Adrien begin to glow with an red aura.

Adrien: "I told Marinette to hit the high road because Lila lying ain't hurting anyone" he said but he's eyes widen as everyone look at him with shock expression.

Alya: "You are forcing him to tell that!" She said but then Kagami gasp.

Kagami: "He ain't as I can see that Y/N place a mark of Truth on Adrien neck" she said confusing everyone until Y/N point at Adrien neck which does have a strange mark on it.

Lila: "What does that even mean" she said.

Kagami: "It basically mean truth and honesty" she said.

Y/N: "Correct as this symbol is basically enforcing you to tell the truth under the law" he said shocking everyone.

Adrien: "Are you saying that it basically an truth liquid!" He said afraid which Y/N smirk.

Y/N: "Yup. Now then your punishment is tamed compared to what the others will get. Your punishment is that you will no longer have the ability to walk" he said shocking everyone.

Gabriel: "don't you dare-" he try to say but got punch in the face by an monster.

Y/N: "silence you worm! Now bring in the next prisoner!" He said then Adrien is move and in his place is Nathalie.

Nathalie: "Just make this quick as I deserve it" she said which Y/N chuckle.

Y/N: "Then I say this: do you pledge guilty for being an support for the terrorist Hawkmoth?" He said which shock everyone.

Nathalie: "Yes and I know it wrong but I would do anything for hawkmoth" she said.

Y/N: "Then your punishment is that you will be deaf for the rest of your life. Now bring in Hawkmoth" he said which the monsters move nathalie then to everyone shock the monsters bring Gabriel.

Gabriel: "I won't break" he said but then got punch by Y/N in the face.

Y/N: "Oh you will. Now tell everyone why you did everything" he said which Gabriel explained that his wife is affected by the peacock miraculous. Then he say how he mistreated his Kawaiis because they're nothing but slaves in his mind which everyone glare.

Gabriel: "So what if I treat them like slaves. They're tools nothing else" he said but got punch in the face again.

Y/N: "Wrong for they are living beings that are considered gods. And you become an terrorist in Paris. Thankfully I managed to do something that you won't" he said then snap his fingers causing an familiar woman to appear which shock everyone.

Gabriel: "Impossible! How did you heal Émilie" He said completely surprise.

Y/N: "I used magic to remove the effects and she listen to everything you say" he said which Gabriel pale then he try to reason with Émilie but she glare at him.

Émilie: "I can't believe you become this Gabriel. And now our son had to suffer because the fact you weren't the father he need" she said then turn around.

Y/N: "For your punishment you will be mute for the rest of your life. Now bring in the final prisoner" he said then Gabriel is move only for Lila to be in front of Y/N.

Lila: "I got immunity! So whatever I say I won't be punished!" She said but got b_tch slap by Y/N.

Y/N: "Sadly that is false as your mother is an assistant to the ambassador. Now tell everyone the truth" he said which Lila did and everyone is completely speechless as Lila lie about everything.

Lila: "So what if I lie there is nothing wrong with lying!" She said.

Y/N: "Sadly you're wrong as you are getting sued for lying" he said shocking her.

Lila: "What! That bull! I'm a minor!" She said but Y/N glare frighten her.

Y/N: "True but your mother can't do anything since she will lose her job if she try to intervene. Now your punishment is that when you attempt to lie you will puke out frogs and slugs" he said.

Lila: "You can't do that!" She said.

Y/N: "Sadly I can as I'm the king. Now then it time to wrap this up!" He said then snap his fingers causing the barrier to goes down.

Just then the police arrived then they arrest Gabriel and his assistant while y/n walk up to Marinette as his returns to normal.

He then press his lips onto her forehead which she open her eyes.

Marinette: "Y/N? Y/N! What happened!" She said which Y/N try to speak but collapsed.

Immediately the police help bring Y/N to the hospital.

A few days later.

Marinette POV:

I can't believe a week pass since Y/N become the King of darkness. And a lot change.

For example my class is doing community service while miss Bustier alongside the Damoclés being fire.

Then I discovered that Y/N is now being hailed as a hero for stopping Hawkmoth aka Gabriel terror.

Course I visit him whenever I do in the hospital as apparently his transformation is different than an akuma.

Currently Lila is now in juvenile for helping an terrorist but once she older she is gonna be in jail.

Anyway here I am in the hospital waiting for Y/N to wake up as I got something to say then I heard a groan which I look at Y/N to see him up.

Y/N Pov:

Upon opening my eyes I see that I'm in a hospital room where I see that Marinette is there crying tears of joy.

Before I could speak she jump onto me then kiss me on the lips completely surprising me but once she pull away she say something that completely shocked my mind

Marinette: "I love you Y/N" she said then I smile.

Me: "I love you too Marinette" I said then the both of us kiss again.