"The fifth day" You signed on your arm as you woke up in the small pantry you used as haven.
It has been 5 days since your PC glitched and dragged you into that horror game you've been playing every night. It's a kind of Granny game but with different rules.
"You were brought to an old mansion and you don't know how, the mansion is too old, messy, and a faint scent of cigar is always in your nose. A lot of doors to open, puzzles to solve, mystery and questions, just to find your way out. It seems like you are alone in this. But beware the eyes from the shadows."
That was the description you read on Steam. It was pretty normal and not implying that you're going to get dragged into the game. For now you managed to survive the 5th day by the skills you gained from playing every night like a freak nerd, according to the game, you have a hidden buddy in the mansion that's helping you to find your ways and solve puzzles, you never see him or know his name. You just hear his childish and cheerful voice.
Yet again, you're playing hard mode. Where Your buddy disappears in the 5th day after a cut-scene. You're now planning how to find your way without him, you started your day, solving some puzzles you can solve them without your buddy.
While minding your business, you actually forgot about the "Eyes in the shadows" that are watching...