Dean silently retreated to his room after his most recent beating from his father. The beatings started shortly after his mother died. It accounts for dozens of scars covering his body. Somehow through the 18 years since his mother died Dean had managed to keep Sam in the dark about how John treated him but also at 22 years old still hadn't managed to get away.
Dean had always prided himself on his loyalty but it also would be the death of him. At least, once a week after Sam has gone to bed, John beats Dean. Telling him how worthless he is and what a failure he has become. Dean always took the beatings without a word, without any fight back.
The first time John hit his son, Dean was only 4 years old.
John stumbled into the cheap motel room half past midnight. Dean had tried long ago put Sam to bed but had only recently gotten him to fall asleep.
"Dean" John growled, his breath smelled of whiskey, "What are you doing awake"
Over the past 5 months since Mary's death, John would leave for hours at a time and often came back filthy drunk.
"Daddy" Dean whimpered "I couldn't get Sammy to sleep"
John sighed and quickly grew angry as he often does after a few drinks.
"I leave you one task and you can't even accomplish that!" John mumbled. Dean looked up at his father and saw his fists clenched at his side.
"Daddy?" Dean question just before feeling a strong sting on his left cheek. Tears welled in his eyes.
"Oh my God Dean I'm so sorry" John claimed just realising what he had done. "I'm so sorry. Daddy didn't mean it" He begged for his own forgiveness by extending a gentle hand towards Dean. Dean flinched as he saw John's hand come near him.
"That hurt daddy" Dean said as tears flowed down his face.
"Dean I promise I won't hurt you again. I am so sorry" John pulled Dean into a hug and then carried him to bed. He mentally scolded himself for hitting his son. He not only promised Dean but he promised himself, it would never happen again.