This is a lengthy unbeta'd fanfic, rather naively written but a compulsive read for all that. Alpha Sam is 22 when he rescues his brother Dean from the omega shelter. Dean has been abused and prostituted out by his father John for ten years while Sam was raised by beta Bobby Singer.
'Dean closed his eyes as his father finished talking. He heard Sam’s voice it was firm but gentle, “You need to breathe, Dean.” He didn’t realize he was holding his breath until Sam said something. Dean slowly let out his breath and took in another one. He wondered if forgetting to breathe was why omegas had to have alphas.'