The Whole Class Traveled Through Time, and I Was the Only One with the System

[Collection, farming development, survival, tower defense, weirdness, horror] The whole class traveled through the foggy world together, and I was the only one with the system! Rely on the [Bonfire] system, lead the class, build a stronghold base, defend against monster attacks, dispel the fog bit by bit, and continue to grow and develop... Many years later, when the fog swept across the Blue Star and mankind was in despair, an interstellar battleship named [Bonfire] quietly arrived...