You are messed up! [1]

In an empty alleyway, stood the figures of four students; all of them wearing the academy uniform. All of them were male.

Among those four, three students were standing in a group and were facing the other, single student who stood in front of them. 

The lone student had his hands inside the pockets of his blazer and was staring indifferently at Emmeric, Winston, and Wynfir—the three students who were standing in a group.

The lone student was in fact, Zero.

"Welcome gentlemen, I was waiting for you," he said, though the expression on his face never changed.

He was not smiling, and his eyes looked sleepy. Something about the air he had around him, gave Winston and the others a bad feeling.

"Are you the one who called us here?" asked Winston, the question directed at Zero.

"Yes."

"Then, was it you who told us to do that?" 

"What do you mean by  that? Can you derive please?" Zero inquired.