After the incident, Jeff was never really the same. He was batshit crazy and not like the kid he used to be. He was never actually happy, like his face portrayed, Ben tried getting Jeff back on his feet but he pushed everybody away and became a heavy drinker. He always thought about Liu and wanted to apologize but he was dead... or so Jeff thought. When Jeff discovers that Liu is still alive he chases him down and finds out that, Sully, Liu's darker side, has been plotting with Jane to track Jeff down and kill him for what he did to them.