Board Thread:Fanon Canon 2/@comment-25152698-20140925004246/@comment-25152698-20140926125437

Well, the curse, along with the fact that he was in a fake world for most of his life, made his extremely ignorant, which led to arrogance. Because he possesses rare kg, he thinks he's better than everyone else, and gets random lusts for blood when he sees common bystanders.

When in the heat of battle, he loses himself entirely, sort of like hidan, and is unable to focus on anything but killing his opponent.