Class 1A were at the blacksite to retrieve the crystal

Deku: "Why are we here??"

Uraraka: "No idea."

Bakugo: "It's for this bullshit crystal."

Eri was distracted and fell behind. Suddenly the lights flickered. Followed by a familiar sound. That sounds like Rush at a lower pitch

Eri: "Oh no! No no no no no!"

You enter the room slowly. You look like Rush with a more detailed humanoid body. You are now covered in actual black smoke

Eri was terrified out of her mind

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