Can someone please just give me a reason to live. I mean I have no friends. My family hates me. And the one person who I thought cared doesn't. So why should I live. Please just anyone tell me why I shouldnt pull this trigger right here and now.

I'm not good at this but I will try: If you're old enough you can try moving to another country, search for people that will like you and a place that feels like a home.

First: How do you know that your family hates you? They might not be satisfied or might be stressed, so they are harsh with you, but I think there are only a few parents who definitely hate their own children. People tend to transfer their own dissatisfaction to others. Think about their own problems. Maybe your bad relationship doesn´t only depend on you!
And the person you thought would care... How do you know he/she does not care? Did he/she say so? Or do you only have the feeling this person wouln´t care? When we are in a bad mood we often get wrong impressions of what others do or think and frequently think they don´t like us. But often this impression is wrong.
Before pulling the trigger check these points out.

Second: Not having any friends is no reason to die. I myself don´t have any either, but I´m still alive! There are other things worth living for. For example: Do you have any hobbies? Something you are talented in? Perhaps you´re drawing funny cartoons? Playing an instrument? Good at cooking? Is there something? Anything? Definitely there is! Everyone has some talents. Though these talents might be difficult to find they exist. Search for something and you will find it!
Try to focus on things you are talented in and forget the rest for a while!
Oh, and if you don´t find any talents, search for something you like. You seem to like anime (otherwise your name wouldn´t be Izaya). Maybe watching your favorite anime or writing a fanfiction about your favorite anime could help you somehow to escape your bad mood.

Naturally people don´t want to die, you know? You also don´t really want to die, otherwise you wouldn´t be here asking for a reason to live. I´m not quite sure whether I could give you such a reason or not. Maybe you have to find a reason by yourself. But I´m absolutely sure that you will find one if you struggle hard enough. First of all let your reason be the hope, that everything will change. Because it unconditionally will change!

People change everyday, everytime - perhaps your family will change too if you just wait for a while.
People come and go - maybe you suddenly get lots of friends next year, because you´ll meet a group of persons who share your thoughts.
Meanwhile just lose yourself in the vastness of the DOLLARS. Here seem to be a lot of nice people who will try to help you.
Just try it for once. You can still pull the trigger later. But if you pull the trigger here and now you´ll never know if there would have been a chance to live a better life.

You have a roof over your head?
You have access to a computer?
You don't live on the streets?

There is always someone who has it worse than you and life gets better. I was abused as a kid and always prayed for my death and my fathers. I finally found my own purpose later in life and am going to school to make my goals and dreams come true. My life started a bit later than others, but now it is a lot better.

It will get better. I always like songs like this,
https://www.youtube.com/watch?v=A4ypW_vI8lE

You are a Dollar. Great reason to live.

>>4 Great comment.

Sometimes we forget to treasure the little things in life, we keep focusing on all those negative things that will bring u down. I say take a break. Find yourself. What do u like doing? Reading? Doing art? Music? Find your passion, persue it. Even if everyone hates u, use your passion as a reason to continue living.

We are born into this world to change some aspect of the status quo. Taking your own life will mean nothing. Stay strong!

Why not just leave? Not this life, but leave the negativity. Leave your house, leave the hatred. Find something better, something more.

Find a hobby or something you are good at and make something out of that.