—Pair up, we have a project that may or may not interest you Aizawa, the teacher, spoke as he entered the classroom accompanied by children no older than four years old. All the students looked at him waiting for an explanation of the project, Aizawa sighed. —They will pair up to take care of a child, part of the hero's job is knowing how to deal with children in case they have to save them He explained, turning to look at the students so they will begin to pair up.