He didn't know why he wanted to kill, it was just out of instinctive excitement. Death is beautiful, isn't it?
He is a murderer. He has no heart and has inherited the crazy blood of his family. But due to a strange combination of circumstances, he became the enemy's hostage and was controlled by others. The enemy country treated Proton cruelly, but he roamed the court with his deadly murderous instinct. To attract the attention of the person who is destined to be his lifelong enemy without him knowing it at all.