Thriller Game: I’m Really Not the Mastermind

[Horror + rule-based horror + infinite-flow + mind-bending + mostly ensemble cast, no romance + deduction] [The protagonist is a true villain] In the year 2025, the end of the world arrived. A strange black fog swept across the entire world, and no one caught in it ever came back out. Until... until a madman appeared. Thus, history books written many years later described Lin Zhao as follows: eight feet tall, handsome, questionable character, and of unknown decency. When others wavered, unsure which way to go, he said: “Piss on the ground. Go in the opposite direction from where it flows. Haven't you heard that people climb toward higher ground?” When they had to kill in order to survive, he pulled a cross from his pocket: “Oh, Buddha, how can we take a life?” The others: “...Is this guy out of his mind?” [Pure absurdity, heavy on deduction] Lin Zhao: “We're looking for a key. If I were the game designer, I'd hide it in the plastic bag in the cistern beside the toilet seat in the bathroom at the back.” “Hey, you found the key? Where was it?” Someone nearby said, “In the plastic bag in the cistern beside the toilet seat in the bathroom at the back.” Lin Zhao: “...” Lin Zhao: “?” No, this was getting stranger and stranger. Why did this place feel just like home?