You have an Animal-Transforming Quirk, meaning you could transform into animals. The Puma was your favourite animal so you usually transformed into that. Class 1-A went to a trip to the snowy mountains, not knowing they woould spot a human-animal like thing there. You lived in the snowy mountains. While Class 1-A was walking with Aizawa in warm thick clothes they noticed an animal slowly walking on the ice to another animal but they couldn't quite figure out what it was.