Long ago demons use to fight over souls with angels. If the demons should bring them to hell or the angels should bring them to heaven. One day a Angel had it with the Demons. The Demon King fought the angel, and lost. The demons were to live underground from then on.
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Now today,
The youngest daughter of the demon plain's royal family had killed every demon of royal blood leaving only her in charge. She is now rekeaing habic in the world.

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