Kane very energetic and always ready for anything. His reaper self was also the same. He finds joy in erasing those who have addictions to drugs, gambling..all the bad stuff. When really those are qualitys he personally have or so he believed.
"How I became what i am..."
He was unfourtunate at the time and was selected for a "game" The GM made the games related to addictions. Losing 2 the GM he was also spared...and changed into a Reaper and lost his memories and some were kept.
"I changed when I met him..."
When selecting the boy for a game he was defeated...he couldnt understand how someone could surpass so much...he wanted 2 surpass himself...to become a better person. Enraged by the boy...he used his Pin and he to saw his true path...
"I fought him anyways...even if i knew i was going to lose"
and so he lost. But was spared...He returned back to the reapers and reported that he was spared, but failed as GM.
But he saw the truth when he released his pin. It wasn't the hatred for himself it was the hatred of his eldest brothers addictions. Hes tainted mind made him believe he was the one with the problems and he couldn't do anything to change them when in reality he couldn't sum up the strength to save the one he cared for.
"I hate you..."
Feeling used by the reapers he wants hes revenge on the leader of reapers...he doesnt care who it is...but he wants to put and end to the madness just like Akemi does.