Bab 150: Chapter 150 - Surprised

After coming inside of the gate he directly began to advance and at the same time he could already see many people like him most likely came to the gate to fulfill the mission that they accepted. This time other than those first years he did not see anyone and everyone of those first years belonged to his Academy. Some of them also came to the Gate with their teacher. 

Well, Allen already expected that he will not meet anyone inside the gate other than people from the White Tiger Academy. As you know that gate was under the white tiger Academy so naturally The Academy will use that type of gate as the training ground for their students and they will not give permission to other people who weren't part of the white tiger Academy.