Chāorén

Four teenagers were on an airplane. They didn't know each other, but they were all outsiders because they were different from the other kids. Nobody wanted them, and all they looked forward to, was their vacation. But something happened to the airplane, and the four teenagers...
They died.
...
...
...
Thought that was the end? Not in this story! Because right after their deaths, the time stopped and got reversed, until right before their death. Then a mysterious white clothed guy showed up. He had strange, big, white wings, weapons of any kind and this kind of aura all around him. He looked at them and said: "Take my hand, if You want to live."

The four teenagers soon discovers that the mysterious white-clothed guy is a Chāorén - a superhuman.
And they are too. And as long as they are together with him, their powers will evolve.
Thinking this could be a whole new start, they use their powers, but someone is coming after them...