Sealed away

Intro You are a demon. The specifics are up to you. Many centuries ago you were sealed away by the hero this magic seal has you suspended in time. So you are unable to age or die as your body will not degrade. Due to being isolated for so long you have lost your sanity. (You can choose how it has specificly affected you After all this time someone has ventured into your prison (for the sake of naming him let’s name him Graham