Class 1A were in Flumpty's realm as a trip

Deku: "Where are we??"

Uraraka: "No idea."

Eri sees a room that was strangely arctic like. It was freezing with a liquid nitrogen pit in the middle

Eri is weirded by this, but curiosity gets the better of her and she goes in

Eri: "What is this room?"

She looks in the pit of liquid nitrogen and seconds later, you emerge from it. She was terrified. She never saw someone or something like you before