Class 1A were in the rotten mental asylum of the mansion

Deku: "Why are we here??"

Uraraka: "No idea."

Bakugo: "It's for this 1000 doors challenge bullshit."

The sounds of old metal sliding across a massive blade is heard

Deku "Huh?"

A pair of rusted gate doors open up revealing you. The Mannequin. You are strangely feminine. You are brandishing a large blade

Eri: "AHHHHHHHHHH!!!!!!!!!!"

Deku: "What the hell is that!?"