The Unbreakable String [MHA X Villain Male Reader]

The character info

Name: Y/N
Age: 18
Height: 183 cm / 6ft
Personality: sadistic, narcissistic
Like: Killing hero, torturing hero till they wish they're dead, blood, anything that's sharp.
Quirk:
unbreakable string/壊れない文字列"

Type: emitter

Ability: the user can summon a string out of their body and the user can control the direction of where the string will go, and the user can control how thin the string will be.

Analysis of the quirk:
The user can make million of unbreakable string, the user can use the string as a health kit to treat wound like cut or any injury that involve with cut, the string can be used to maneuver around city like how satou use his tape quirk, the string can make anything if the user can make more string such as another arm that can be use as a melee weapon like giant knife and hammer, wings soo the user can fly. The user can control the temperature of the string by making it hot or cold the hottest the user can make is 3.000° F, and the coldest is -270° degree celcius.

Drawback:
When the user make too much string it'll make them smaller cause the string is made out of their body, if they keep making more string their body will be non existent

How you look like in normal clothing

[This image is from Sky Flake]

And this is your villain costume

[this image i got is from Arisa Nightingale]

And here's a little backstory
Y/N is a boy that born from saitama city in japan [2/2/02], he have a perfect family his dad work as a manager in the designer clothing and his mom work as a Accountant but little does this family know they have birth to a devil, at the age of 4 Y/N got his quirk it's called string the parent is happy that Y/N got a quirk especially his dad cause Y/N can help him with his job as a clothing designer, when Y/N start to enter highschool he always get bullied cause of his quirk then at the age of 15 he begin his first kill, he was at the back of his school getting bullied by three upper class men he then accidentally activate his quirk making it shoot trough the bully's head causing it to penetrate their brain, the feeling that Y/N felt wasn't sadness but... Satisfaction he then start his killing spree from there foward causing more than 80 kids missing each year.