Jōno Saigiku, whom is a new worker at Freddy Fazbears pizzeria, had so happened to be a Night guard as well.

You had watched as he entered the Pizzeria, and sitting in the office. He had great ears, so he knew when something moved, such as the animatronics turning on.

He couldn't watch the security cameras, but he knew when something, such as you, was nearby.

(Let's just say you're a random soul that roams around this pizzeria.)