Differences

"Grandfather,"

Atticus's voice reverberated through the hall, and everyone's eyes in the hall immediately turned to Atticus once more.

Only one thought resonated in their minds: What does this monster kid want again!?

They all still hadn't recovered from all the spectacles Atticus had just shown them, and he still had more to say?

Magnus focused his piercing gaze on Atticus for a few seconds, making him feel as if an enormous weight had settled upon his shoulders. 

Finally, Magnus granted Atticus the right to speak, uttering a single word, "Speak."

Atticus, still bowed, started speaking, "Grandfather, this incident had clearly happened due to differences between me and a particular trainee."

Despite the fact that this matter was spearheaded by Edward, all of this happened because of one person: William. William was basically the cause of everything.