(Delusional) Phantasmic Emperor

Lore
One day, an envoy from another land approached the king. Whe he laid eyes on the king's ghastly visage, he muttered "monster" under his breath. However, that did not escape the ears of the king, and its repercussions were disastrous. The illusion had been broken. The once kindly king, awoken to his true nature, sank his fangs and claws into the subjects he once loved. His rampage devastated the castle, and all within perished.