Ash Tower of Destruction

One day, a gray tower stood abruptly in the center of the world, in a place called "Narich". People began to be confused, shocked and panicked. Every government in the world has sent troops there. I saw the tall tower and the wide entrance. The troops stood in front of the entrance and all reported to their superiors. After getting the instruction, I entered it. When he came out again, he brought back many strange things. After studying them, he found that they were substances higher than anything on this planet. Later, it was discovered that there was a land and ocean larger than this planet inside the tower. Slowly, basically all humans moved into the tower.