Okazaki Naoyuki

Naoyuki is Tomoya's father. His wife, Atsuko Okazaki, died when Tomoya was young, thus leaving only himself to raise Tomoya. After the accident, Naoyuki turned to alcohol and gambling, and had strict fights with his son. One day while arguing with his son on trivial things, he slammed Tomoya against the wall, dislocating Tomoya's right shoulder. Immediately after that, Tomoya went to the hospital, it was declared to be untreatable.