The Shadow Hero's Adventure in Another World

In a mysterious space. A "person" whose face could not be seen clearly pulled out a "book" from the "bookshelf" and opened it casually. "Even here is affected!? I still like this quite a lot, I have to find a way. I have it!" "He" pulled out another "book" from the "bookshelf". "It might be possible if we borrow an insignificant person from here. After all, this place is quite resistant to crystal dust." The two books "he" took came to a table. "He" placed a book in an instrument and operated the instrument. "Let me pick someone who doesn't matter." As "he" operated the instrument, it slowly spit out a piece of paper. "He" took the book out of the instrument and put another one in, and then put the piece of paper that had just protruded into the instrument again. "Would it be too abrupt if done this way?" "He" operated the instrument a few times. "That makes more sense." "He" put the two books back in their place. "I'm really looking forward to what happens next." A young man's fate changed. Crystal dust was born from a world, but that world could not bear the crystal dust and was finally destroyed. With the destruction, the crystal dust reached the cracks of the world, and then entered other worlds and increased in other worlds. Crystal dust will be suppressed by unique forces that exist in other worlds, such as magic, aura, etc., Which will suppress crystal dust, and some will not even be affected by crystal dust at all. The farther away the world is from the original world, the less affected it will be by the crystal dust.