-Liu doesn't even kill, the voice in his head -many refered to Sully- makes him hurt people but Liu will always stop when he realizes he went too far.

-Liu is one year older than Jeff, in my opinion.

-After the hospital accident he now travels all around the country, and met Jeff several times.

-Liu and Jeff would go to the bar whenever they meet, to talk about life and everything they've been trough. Liu knows Jeff kills people, but he has the same opinion as his brother. Jeff is only setting them free.

PLEASE, don't hate me for making Liu older in this. Remember this is opinions! Changing ones opinions is like changing a banana to a strawberry!