Shaun's mother had already passed away by the time he was seven.

His father had always treated him quite badly, and following his mother's death, his father had become an alcoholic, regularly abusing him both verbally and physically. Even the slightest mistake that he made would often result in a severe beating, and sometimes, he was abused for no reason at all.

This traumatic upbringing resulted in an extremely timid personality, and as a child, he would tense up at any sign of danger. 

At this point, he was already near his breaking point, but following the conclusion of his father's career, the abuse became even more severe, and Shaun was finally pushed over the edge.

Not long after his father was laid off, a pivotal event took place in Shaun's...