Survival Game: My Teammate Is an Eldritch Boss

With her senior brother missing and his fate unknown, Yun Wan enters a terrifying game developed by the supernatural to find him. Monsters with gaping jaws, a sinister and terrifying school, a town shrouded in thick fog... One wrong step, and she'll become a meal for the supernatural. In one horror game after another, humans are slaughtered at will by the supernatural, like sheep. With her spatial abilities, Yun Wan fights to survive while searching for any clue about her senior brother. But after clearing so many stages, she still hasn't found him. Instead, she meets a strange NPC who is sometimes a mysterious researcher, sometimes a distant duke, and in the next instance, a wealthy business tycoon. Yun Wan knows there's something off about this NPC, but so what? It doesn't matter what kind of teammate you have, as long as they're useful. But as the NPC's identity slowly comes to light, Yun Wan finally reaches the last stage after fighting her way through the instances, where she sees the final mission: [Kill the Game Boss] Wait, does anyone remember that I came here to find someone? Yun Wan's vision goes black. Kill the final boss? How could she possibly do that? She says this, then plans to escape on the supernatural creature she just caught, but someone grabs her in one swift motion: “Weren't you going to kill me?”