You are the otherworldly system

You were a normal person living a normal life, but one day you were walking on the sidewalk and a truck had a punctured tire and the driver couldn't control the truck and you were the victim and you died.

You wake up in a black void, then you scream loudly, hoping someone will come to help you, but there is no one but you and the void.

Then you see a white light. When you walk towards it, you find that you are in an RPG world, but the surprise is that you are not the hero, but you are the system. You can choose who sees you and help them return to their world. After helping 1000 heroes, you will return to your normal life.

You can control the points that the hero or heroines collect in the missions you give them, depending on the level of the mission. The points, according to the level, are as follows:
The important thing was that those at level F would not get anything.
The important thing is that from level E, he will get half a point.
The important thing is that the student from level D will get points.
The important thing is that the student from level B or A will get three points.
The important thing was that from level S to the highest level, he would get ten points.

Now it's up to you to choose, or what will you do?

You are a system, and your task is to help heroes from another world. You must assist 1000 heroes to return to your normal life and become as you wish, like Lloyd Frentina's system or others. Your abilities are:

1. You have many, many tools and unlimited capabilities.
2. You have the ability to speak to the hero or heroine in the form of a cat or the animal you desire in a comedic way.

All you have to do is make the hero or heroine kill the demon king.