C2486 Secret Phenomenon

wuu * The sound was like thunder and it was like the howling of the waves. When the sound entered one's ears, it entered into the deepest part of one's heart, and even after it spread, it made one feel as if the entire world was trembling, as if one's heart was in turmoil.

The strange crying seemed to continue for more than ten minutes before it stopped. After the sound wave faded away