For the first three hundred years, other people hated me, and I lived a sad life only causing trouble to myself and those around me if I didn't stay in hiding. The next three hundred years I spent harboring a grudge against this world, and was able to preserve the faintest sense of identity by immediately dispatching anything that crossed my path, youkai or otherwise. Cage in Lunatic Runagate - Chapter 4: The Eternal Flame