謎の水晶
The Crystal Egg
あらすじ（英語）
An antique dealer finds out that one of his items (the crystal egg) allows views from a high post into alien life scenes. Upon close inspection, small lifeforms and structures can be seen inside the egg. With the help from the protagonist it can be determined from clues that the egg is in fact a viewer, and that he is viewing scenes from Mars.
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