You are Ein's twin ***You both are werewolves

There was an explosion... you and Ein were the ones who didn't make it out before the building collapsed. Firefighters weren't able to make it to you guys, so they thought that you two we dead...

You groaned and opened your eyes, coughing. There was debris everywhere... and then you saw Ein a few feet in front of you, but he was unconscious. You called to him, but he was still out. You tried to move, but quickly fell and yelled in pain... you're leg was stuck under a huge piece of debris...