It was supposed to be a fun day. Class 1-A went to the U.S.J: The Unforseen Simulation Joint, with Thirteen. (Otherwise known as Anan Kurose.) Shortly after Thirteen's explanation of the responsibilities of rescue situations.. a portal appears in the middle of the building. "Thirteen, protect the students!" Aizawa's voice wrang out, as he rushed to deal with the villains that were escaping the portal. Thirteen stood in front of the class, her arm outstretched. She wasn't going to budge.