I Saw My Girlfriend's True Face Alone in the Last Days of Cthulhu

When you wake up, the world becomes a Cthulhu game, bound to the "Doomsday Dominator System". In the apocalypse of this ruined city, Cthulhu monsters are rampant and dangers abound. He rescued Su Yue, who was like a beautiful girl in his eyes, but he couldn't avoid Su Yue when he saw her What kind of secret is hidden behind this? Is it the setting of the game, or is there another hidden secret? Can Lin Yu survive with Su Yue in this Cthulhu apocalypse and solve many mysteries?