All he wanted was to keep his head down and make it through what was left of the school year at a new school, and thanks to some blue freak that couldn't happen.
He didn't ask for any of this, he didn't ask to n paired with the German ball of sunshine for a science tutor. He didn't ask to do any tutoring at his house, and he certainly didn't ask for his dad to see any of it. If he found out he was failing school already then- well, Graydon knew what he would do but he didn't like to think about it. Those big hulking fists beating down with inhuman strength. That part was the part he got used to years ago. It started small with slaps on the back of the head as a kid, at least he waited to actually start beating Graydon until he thought the kid could have a change. His reasons for doing so varied from a punishment, to something more complex Graydon couldn't understand.
"Boy, it's a mutants world and someones gotta toughen you up for it." He said once when Graydon was at his old school, but was then laying on the floor with blood coming his nose and an out-of-socket arm. Dad picked him up, popped it back into place and hit his boy for screaming.

The first time Kurt intervened it was a punishment, something about dinner- Graydon didn't know what happened but one second his eyes were closed a waiting his father's closed hand, and the next he was outside with the German asking, "Are you okay?"
The first time Graydon wasn't worried, or concerned much. But he would have been if he knew what he knew now.
Currently he sat, with the cold night air blowing through his wavy brunette locks, it stung his face even more than the swelling that was lite up by lights of a police car and an ambulance. Who would've thought the mightly Sabertooth would be taken down by a simple police force after binge drinking. His eyes were wide with shock, or as wide as the swelling would allow, and disbelief as Victor Creed was in the back of that sqaud car. Suddenly he felt slightly like a scared kid waiting for Dad to come home.
"Graydon! I am so sorry!" The German said in a panic before him, he was noticeably blue as opposed to the first time. He really hadn't intended for any of this to happen and seeing Graydons beaten face grow hot with anger confirmed he got too involved, at least from Graydons point of view.
"I hadn't-"
"STAY THE HELL AWAY FROM ME!"
"Brother, please you're just-"
"DON'T EVER CALL ME THAT YOU BLUE FREAK!"
Kurt' s face fell even more. As he watched his brother have to go with a social worker, he went home and for the first time since he was a very young child- he said a prayer before bed, quietly wishing he could do more for a brother who'd suffered more than he ever had. Whether Graydon liked it or not, Kurt looked out for family.