The author is not very good at writing introductions, and the main text depends on the content.
Counterattack your own life on behalf of some characters in movies and TV shows with bad endings. You can draw one or two golden fingers in each world, and one of them has its own soul space. The protagonist's personality is different in each world. When entering that small world, his personality will be the same as that of the original protagonist, but there will be some slight differences.