Wanted : Dead or Alive - BNHA Mafia! AU

In a world, without quirks, Izuku and Katsuki were the closest friends. They did everything together. Until Katsuki and his family move away and Izuku was left alone with his mother and father.
Katsuki:
After around a decade and a half later Katsuki returns to Japan to find his long lost friend, accompanied by new ones. However, he finds out that Izuku is missing and Hisashi Midoriya is dead.
How does Katsuki react and do when he sees Izuku in a cafe, enjoying a coffee...
Izuku:
His father forced him to study and train from the age of 8. Izuku was taught weapons and martial arts. he was made to study and study to get the top marks possible. He and his mother were beaten regularly by a man they both loved and trusted.
What happened to Izuku and his father when they went out for a run?
POSSIBLE SHIP? POSSIBLE DAD MIGHT OR DADZAWA
TRIGGER WARNINGS/SENSITIVE TOPICS: ABUSE - PHYSICAL AND EMOTIONAL, ASSULT, MURDER, KIDNAPPING, WEAPONS