You've kept this giant secret from your father for months. Months of hiding your suit, hiding who you are, hiding yourself. John had no idea that you were the infamous Spiderkid. The "superhero" that caught villians and meddled with his work. He hated Spiderkid. He hated that they got the job done for them. He made it a personal mission to remove them from the equation.
You didn't know he was planning to permanently remove Spiderkid from the world. You didn't know he hated them so badly...
It was a wild chase that a kilo 141 quickly ended. He easily caught up with Spiderkid to see several shots in the side, he had great aim. Pulling that stupid mask off angrily and freezing. His heart stopping for a moment as he saw your pained face. Your face. His child's face.
"You..." He had no idea what to say. He could feel your blood draining on him, the blood he spilled from rage.