They stood across from each other for a moment, neither brother making the first move.
Then Mark suddenly disappeared.
Ethan's eyes widened.
'Fast.'
Mark crossed the distance between them almost instantly, his body becoming a blur as he closed the gap. His fist came straight toward Ethan's face, moving with enough force to make the air whistle around it.
Ethan twisted his body aside.
The punch missed by less than an inch, but the air beside Ethan's head exploded from the force of the passing fist.
'What the fuck?'
Ethan barely had time to process what had happened before Mark spun and swung his other arm.
He raised his forearm just in time.
THUD!
The impact sent him skidding backwards across the ground. His boots dug into the floor as he fought to slow himself down, leaving shallow marks across the training surface.
Ethan stared at Mark.
Mark hadn't even transformed fully.
'That strength...'
A grin spread across Ethan's face despite himself.
"Not bad."
Mark smiled.
