Class 1A were at Fredbear's Family Diner for a school field trip

Eri sees a door to the Parts and Service room. She goes in to see you

She was especially confused. Because you look like a completely different model. An older one. And especially weird and horrifying

Eri: "W-What is this?"

Eri turns you on by sheer accident

Eri: "O-Oh no!"