Talk:ハイハハイニ (Hai wa Hai ni)/@comment-32109060-20171014213731/@comment-35725881-20190106014102

I believe that the meaning is along the lines of Kaito is being corrupted by the metal and steel around him and causing him to die. The Robots were created by him to represent his dead friends who had already passed on. He eventually dies at the end because of the corruption affecting him. His right eye is black due to the corruption. The scars under both of his eyes also represent the corruption.

This is just conjecture but there you go.