The Hidden room ~ William Afton x Reader smut (TW!!! Sex)

New situation.

It seemed like a simple as always day, it. I worked for a few hours, I liked the job, but I felt like someone was watching. This time I had a dayshift, but got surprised when my boss called.
"Unfortunately, you'll need to work both day and nightshift. I strongly apologise."
I never had a nightshift before. Everyone would come back exhausted, saying that they didn't had any rest or sleep. I was anxious, but at the same time somewhat excited.
"Come into my office like an hours before everyone leaving."
Cold voice spoke. I didn't get to see his face, but immediately I understood that there was my boss. Seemed like a long day waiting.

Everyone started to leave, I understood that it was the time to go.
I knocked on the door multiple times, but nothing came out, no matter how rude and disrespectful it seemed, I opened the door.
Inside there was a simple office room, nothing too crazy.
I didn't hear anyone come in and only felt cold hands hold onto my shoulders. Cold ran through my body.
The cold hand reached for mine and picked it up.
"Let me show you something."
I walked behind him into some weird room, behind the pizzeria, he led me there.
"Don't panic, it's gotta be alright. I just need something. Wait here and don't draw any extra attention."
He ran off into the dark, straight through the door. I was surprised, but waited patiently.
After good 10 minutes he came back but he wasn't holding anything.
"What's going on?" I asked politely.
"You'll understand, I don't want to spoil."