Yoshihisa Kira

Driven by a profound sense of negligence, this Tokyo-based truck driver served as an abusive and indifferent father to his son, Kōsuke Kira. His lazy lifestyle and volatile temper, exemplified by smashing his son's gaming console during a bout of irritation, created a toxic domestic environment. By consistently abandoning his parental responsibilities, he directly contributed to the psychological instability and subsequent criminal actions that would define his son's tragic path.