Timeskips

(Yui POV)

Currently I'm 4 years old, father said I have to train on using different types of swords, because of my quirk I can make different things, so that I can have versatile movesets. I also have to improve my physique so that I can become stronger. Strong huh... father said that I need to become stronger, so that my path has no obstructions.  

Oh here comes father, "Today I'll train you on how to properly handle a sword. Here catch"

I caught the training sword and waited for my father's instructions. "Now copy my stance and I'll correct you if there is any fault at it."

I only nodded at him and started copying the stance. When I finished copying him then he swung his sword downwards, I copied the swing as well. When we finished our training for today. My father says that my sword training may be faster than he thought apparently I am a genius at using it. He says that I will train on more various weapons. 

When I ask my father that will I also train in guns as well. My father only shakes his head saying "Guns sometimes don't work on certain people, and we will only train our body to become durable and our body is also our weapon." Well I can agree on that. Some quirks can give durable bodies that can withstand guns or fast enough to dodge bullets.

(3 years later)

After the 1st year, I became proficient on different weapons . My favourite so far is the rapier. I asked my father If i could have a rapier. My father didn't agree to me saying I was too small, Well he did order some daggers for me, which is better than nothing.

During this year, We attended some parties, I must say attending them is troublesome. I need to keep all smiles and be polite. I hated attending them. It feels nauseating to me, they keep bugging me about my life. When I had enough of them, I used a 'little bit' of my quirk. After using it, they ran with their tails tucked between their legs. 

I must say they were pathetic, they were so scared like i was some sort of demon, well it's better that way. Well I did meet the Yaoyorozus, Apparently father and Mr. Yaoyorozu are acquainted with each other, the Yaoyorozu funded some of the government projects and some heroes. 

I did meet their daughter, though she's timid and shy but she is smart and has a great quirk. A little training will make her strong. After those parties, my father decided to do survival training and hunting.

During the first few weeks of the survival training, father forbids me on using my quirk to increase the difficulty of the training. Due to quirks, some animals have their own quirk, though the government maintains the animals that have quirks. My father sometimes adds animals with quirks. Which makes hunting exciting to me. Some animals are faster, some are stronger but in the end, they are just prey to me. The dangerous ones I killed are being kept as trophies in my bedroom.

( 2 years later)

During these 2 years, I kept hunting some animals and trained my quirk. On my ninth birthday, father and I decided to go travelling. Mother wasn't feeling too well today and stayed at the mansion. After travelling sometime, we arrived to a secured facility, I asked where we are and answered "Tartarus". 

I know this place as a highly secured facility for prisoning dangerous criminals. When we stepped out of the vehicle, a man in his late 40s wearing some body armour, greeted outside and introduced himself as the warden of this place.

Father talked to the warden of the prison while I waited beside the car. Later on they both finished whatever they were talking about and gestured to me to follow them. We entered the place and do some security check ups. We move to various hallways and arrived to a steel door. 

The warden do some scanning to the door. When he is finished, the door slowly opens. When the door is opened it only reveals a man sitting on a high-tech chair. The man is sitting down restrained on a large, high-tech chair with a full-body straitjacket. After examining the prisoner, Father looks at me and said "Kill it". 

At first I immediately looked at my father and seeing his serious face, I was convinced that this is real, I thought we were here to let me experience what is inside this prison. Well better to do the job. I created an executioner's ax, and headed to the prisoner. 

When I first looked at the prisoner's face, he was scared. When I saw that expression on his face, I must say that expression makes me feel jovial, knowing that their demise is on my hand. So I slowly move to him and make the ax grate to the floor to make a noise. When I get near him, I slowly raise my ax and whisper at him so that my father doesn't hear me "What do you feel, when you know that your life is in my hands hm?". 

I waited for a response, his head slowly rising to look at the ax then me. When I met those eyes, it's all I needed to decapitate him. I lowered the ax to meet its neck, when the ax moved through him. The head rolls for a while then blood flows out of his neck. When the head stops rolling and showing a scared face of a man. 

After finishing that, I moved to father and stood opposite of him. He said "What do you feel?". I replied while smiling to him "Honestly it feels good!". My father only raised his brow at my response. Then my father said "Hmm, expected after killing all those animals, you must have picked some habit but I won't care as long as you are fine." I only smiled and nodded at him.

After that we got back to our car, while I was gazing outside. Father said to me "After this day, tomorrow you will need to have some work experience". I looked at him at the eyes in the front mirror of the car, and waited for more. "You will become a vigilante after a year, the government will form a squad that will eliminate some targets. And YOU will be the leader to it".