The End of the World Ghosts

In an accident, the three of them were forced to come to a different world together. They knew nothing and were unclear about anything. They were targeted from the beginning, and they were also involved in a deep whirlpool. As new variables, what will happen to this world? Let's see how we break the situation, then the ending this time should be good. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.