[Cthulhu-style Horror], [Survival Game\Battle Royale], [Ability Awakening], [Time Backtracking], [Strange Tales of Rules].
When I thought this was just a boring math class, I found that the campus had become a killing field with weird rules.
When I thought I could regain my freedom by escaping from the dungeon, I discovered that the whole world was just a virtual cage that imprisoned my consciousness.
When I thought that the power of awakening was the last hope of mankind, I discovered that the so-called "salvation" had already written the epitaph for civilization.
