Daredevil: The Man Without Fear #1

Young Matt Murdock is the son of Battlin' Jack Murdock, a down-on-his-luck boxer who has been forced to become a mob thug in order to pay his bills. Matt Murdock's life forever changes the day he saves a man from an oncoming truck, becoming blinded by radioactive chemicals. Having his other senses enhanced, Matt begins to see the world in a different way. It is then that Matt is approached by the mysterious Stick, who trains Matt to be a warrior. But unfortunately for Matt, his life is about to change again when his father refuses to take a dive...