Have you ever created a self-insert character?

[Red]

Yes, a man who makes big mistakes by small and simple choises, like me.
He narrates the whole story from his point of view, and only appears at the beginning and at the end of the plot. He's the one who allowed this problem to happen, responsible for the entire story the novella is telling about.
In addition, there's one character who's identical to me. Shy, has red hair, misunderstand things easily, likes to think, silent. His actions are like mine, without knowing about things he's not aware of, of course.