Eduardo wasn't planning on shooting Marcello. Of course, he hoped to do that very soon. He pointed the gun at Marcello but didn't get the reaction he wanted. Instead, he remained calm. He thought Marcello would plead for his life, but he wasn't even scared of death.
Is that what it means to be a Diabolo? No one in the Diabolo house is allowed to shed any tears or plead for their lives. Marcello had gone through different training ever since he was little and one of them was endurance.
When he was Carlo, he heard rumours about the kind of training Marcello received from his father. He was locked in a cold room and was left to survive for two hours when he was young. Marcello had to survive using methods only he knew.
